Organic Foods Pdf Essay Example for Free

Organic Foods Pdf Essay Abstract: During the last decade, consumers’ trust in food quality has decreased drastically, mainly because of growing ecological awareness and several food scandals (e. g. BSE, dioxins, bacterial contamination). It has been found that intensive conventional agriculture can introduce contaminants into the food chain. Consumers have started to look for safer and better controlled foods produced in more environmentally friendly, authentic and local systems. Organically produced foods are widely believed to satisfy the above demands, leading to lower environmental impacts and higher nutritive values. So far, studies have partly con? rmed this opinion. Organic crops contain fewer nitrates, nitrites and pesticide residues but, as a rule, more dry matter, vitamin C, phenolic compounds, essential amino acids and total sugars than conventional crops. Organic crops also contain statistically more mineral compounds and usually have better sensory and long-term storage qualities. However, there are also some negatives: plants cultivated in organic systems generally have 20% lower yields than conventionally produced crops. Several important problems need to be addressed in the coming years: environmental, bacterial and fungal contamination of organic crops and, the most essential issue, the impact of organic food consumption on animal and human health.  © 2007 Society of Chemical Industry Keywords: organic plant crops; quality; yield; composition; nutrition; vitamins; phenolics; sugars; nitrates; nitrites; pesticides; dry matter; health; sensory qualities. FACTORS INFLUENCING THE QUALITY OF ORGANIC PLANT FOOD PRODUCTS There are several important factors in?uencing the quality of food products that also are relevant to organically produced plant products. As illustrated in Fig. 1, the basic factors are the quality of the environment (abiotic factors) and the levels of pest and pathogen damage (biotic factors) to which plants are subjected. The main components of the environment (air, water, soil) have to be unpolluted if the crops obtained are expected to be of high nutritive quality. Many environmental contaminants enter the food production chain (soil–plant–animal–human organism), causing signi? cant problems in human health. 1 These contaminants include heavy metals, pesticide residues, nitrogen compounds, mycotoxins, chlorinated biphenyls (PCBs), aromatic hydrocarbons (e. g. benzo[a]pyrene), plant growth stimulators (e. g. choline chloride), antibiotics, hormones, radioactive isotopes and plastic substances (monomers). Climate and weather are also important factors, as well as soil type and pH, soil cultivation, fertilisation and conditions of crop storage after harvest. ? Biotic factors can have also a signi? cant impact on crop quality. The main biotic factors are cultivar choice, bacterial and fungal contamination (disease) and pest damage. Cultivars of the same crop species can differ signi? cantly in nutritive quality. For example, the content of ? carotene in carrots (Daucus carota L. ) can vary between 7. 19 and 13. 84 mg g? 1 depending on the cultivar. 2 The main potential source of bacterial contamination in plant crops is animal manure used in organic farming. Contamination can take place via the roots or by water splashing onto the leaf surfaces. The most important organisms are several species of facultative anaerobic bacteria (Salmonella enterica, Escherichia coli O157:H7, Campylobacter spp., Listeria monocytogenes, Clostridium botulinum, Mycobacterium paratuberculosis), protozoa (Toxoplasma gondii), tapeworms, viruses and prions. The results obtained so far are contradictory. Some studies indicate higher bacterial contamination in organic crops, while others show the opposite. 3 Mycotoxins (produced by fungi) originate mostly in the ? eld but can also develop during storage. Owing to the fact that fungicides are not used Correspondence to: Ewa Rembialkowska, Organic Foodstuffs Division, Faculty of Human Nutrition and Consumer Sciences, Warsaw Agricultural University, Nowoursynowska 159 C, PL-02-776 Warszawa, Poland E-mail: ewa [emailprotected] pl (Received 24 October 2006; revised version received 29 January 2007; accepted 8 February 2007). Figure 1. Factors in? uencing the quality of organic food products. in organic agriculture, some authors believe that organically produced foods will contain higher concentrations of mycotoxins. However, literature reviews show that mycotoxin concentrations are usually similar or reduced in organic compared with conventional products. 4 The most notorious mycotoxins are those produced by Fusarium species on cereal crops and maize. One of the reasons for lower Fusarium infections in organic grains could be the lower nitrogen concentrations in the tissues. 5 Insect pests also exert an in? uence on crop quality. Because of the ban on synthetic pesticides in organic agriculture, insects often damage fruits and vegetables, thereby diminishing their yield and harming their appearance. However, it is not clear whether they also reduce their nutritive quality. In contrast, there is evidence that organically grown plants contain more phytochemicals (which are natural insecticides) and are therefore more resistant to insect damage. 6 They can also play a positive role in human health, because several phytochemicals, being plant defence compounds, are connected with possible health bene? ts (Brandt K, oral presentation at QLIF Congress, Newcastle, 2005). Regulations on organic plant production allow actions that avoid many negative features of crop quality if they are consistently performed by producers. In order to ful? l these demands and to offer highquality products to consumers, an ef? cient and airtight certi? cation and control system must be implemented. In most countries such systems are quite ef?cient, though a rapid increase in the number of organic farms could lead to problems with a subsequent loosening of regulatory control. Therefore the main rule should be ‘trust is good, but control is better’. Moreover, the ? nal quality of organic food products is in? uenced by the effective implementation of 2758 the regulations on animal production and organic food processing. Only precise ful? lment of all these regulations can guarantee the best organic food quality (Fig. 1). IMPACT OF REGULATION ON ORGANIC PLANT PRODUCTION The regulations for organic plant production are clear and detailed. 7 The European Union (EU) regulation published in 19918 contains parts that relate directly to the composition of organic plant products. The most important aspects of this regulation include:7 †¢ a ban on genetic engineering and genetically modi? ed organisms (GMOs); †¢ lower nitrogen levels – a maximum limit for manure application of 170 kg N ha? 1 year? 1 ; †¢ a ban on synthetic pesticides; †¢ a ban on synthetic mineral fertilisers; †¢ a ban on growth promoters. Organic farmers must follow the above regulations if they want to pass the inspection procedure every year and receive a certi? cation document. If all requirements are complied with, several qualitative results can be expected. The most important conclusions from scienti? c comparisons are given below. CONTAMINANTS Nitrates and nitrites A large amount of data shows that the content of nitrates and nitrites is distinctly higher in conventionally cultivated than in organic crops. This is important, because nitrates can easily be converted into nitrites, which can cause a dangerous illness called methaemoglobinaemia in babies, infants and elderly people. 9 J Sci Food Agric 87:2757–2762 (2007) DOI: 10. 1002/jsfa Quality of organic plant products. Moreover, nitrites can react with amines to create nitrosamines, which are carcinogenic and mutagenic substances causing cancer of the digestive tract and leukaemia. 10 This process is dangerous not only for young children but also for adults of any age. Based on a large amount of data, the nitrate content of organic and conventional crops has been compared. On average, the nitrate content of organic crops was 49% that of conventional crops. 11 These and other data provide a basis for stating that organic methods lead to an approximately 50% reduction in the intake of nitrates and nitrites by humans. Pesticides Governments place legal limits, known as the Maximum Residue Level (MRL), on the level of pesticides that can be present in food. The MRL is usually estimated by testing individual pesticides on rats. Governments maintain that consumption of pesticides below the MRL is not a health risk. However, at lower levels, pesticides are known or suspected to cause many diseases and health problems, including cancer. 12 The main problem is that the MRL for pesticides is usually estimated by testing individual pesticides on rats for a relatively short period. Virtually nothing is known about the effects of consuming combinations of potentially hundreds of different pesticides over the course of a lifetime. We do not and cannot know explicitly what is causing what, so precaution is the main tool available to us (Howard V, oral presentation at QLIF Congress, Newcastle, 2005). The levels of pesticide residues found in organic crops are de? nitely lower than those present in conventional crops (Howard V, oral presentation at QLIF Congress, Newcastle, 2005). It can be expected that eating organic foods will result in lower pesticide levels in human milk and body tissues. There is some evidence con? rming this hypothesis. Researchers in France found that the level of pesticide residues in the milk of breast-feeding women decreased signi? cantly with an increase in the proportion of organic food in the daily diet (from 25 to 80%). 13 All available results show that the content of pesticide residues is signi? cantly lower in organic crops, which creates safer health conditions for consumers eating organically. Heavy metals Heavy metals such as cadmium, lead, arsenic, mercury and zinc are introduced into the food chain from various sources, including industry, transportation, communal wastes and agriculture. For example, mineral phosphoric fertilisers used in conventional agriculture can introduce cadmium into crops, but the metal industry and transportation also cause cadmium contamination of soils and crops. Therefore there are no clear results in studies comparing the levels of J Sci Food Agric 87:2757–2762 (2007) DOI: 10. 1002/jsfa heavy metals in organic and conventional crops. Some data point to higher levels in conventional crops, while others show the opposite. 11 A problem to be solved is whether organic farming (composting, increasing the organic matter in soil, pH, etc. ) can diminish the intake of heavy metals by cultivated plants. DESIRABLE COMPOUNDS IN PLANTS Vitamins, phenolic compounds and mineral compounds The nutritive value of foods depends mainly on them having the appropriate content of compounds indispensable for proper functioning of the human organism. The content of phyto-compounds in plant foods is a topic of great interest in food science nowadays. A growing body of evidence indicates that secondary plant metabolites (phytochemicals) play a critical role in human health and may be nutritionally important. 14 There are two main theories explaining the factors in? uencing the levels of compounds in plants. 15 The carbon/nitrogen (C/N) balance theory states that, when nitrogen is easily available, the plant will ? rst make compounds with high nitrogen content, e. g. proteins for growth and nitrogen-containing secondary metabolites such as alkaloids, glucosinolates and non-protein amino acids such as the Allium ? avour precursors. When nitrogen availability is limiting for growth, the metabolism changes more towards carboncontaining compounds, e. g. starch, cellulose and non-nitrogen-containing secondary metabolites such as phenolics and terpenoids. The second, newer theory is the growth/ differentiation balance hypothesis (GDBH). 15 It states that the plant will always assess the resources available to it and optimise its investment in processes directed towards growth or differentiation. The term ‘differentiation’ encompasseses increased formation of defence compounds as well as accelerated maturation and seed development. The C/N balance theory is a special and typical case of the GBDH theory, since low nitrogen availability is the most common growth-limiting condition in natural ecosystems. 15 To verify the above theories, several authors investigated the content of some vitamins and phyto-compounds in organically and conventionally produced crops. In order to summarise different data, for each organic–conventional comparison a % difference was calculated: [(organic ? conventional)/conventional] ? 100 The collected data for several desirable components are presented in Table 1. The role of vitamin C (ascorbic acid) in the human organism is basic for several metabolic functions, mainly because it is one of the major cellular direct antioxidants (along with glutathione) and is a 2759 E Rembialkowska Table 1. Contents of desirable components in organic crops relative to those in conventional crops Component Vitamin C Phenolic compounds Iron Magnesium Phosphorus Mean % difference +28. 7 +119. 3 +21. 1 +29. 3 +13. 6 Range (%) ? 38 to +135. 5 ? 56. 6 to +734. 2 ? 73 to +240 ? 35 to +1206 ? 44 to +240 Number of studies 21 15 16 17 18 production and reduces carbohydrate production. Moreover, the increased protein produced in response to high nitrogen levels contains lower amounts of certain essential amino acids such as lysine and therefore has a lower quality with respect to human nutrition. Source: Ref. 17 and author’s own calculations. cofactor for certain enzymes. Vitamin C also supports detoxication and resistance of the human organism. The higher content of vitamin C in organic crops is bene? cial to health, because vitamin C inhibits the in situ formation of carcinogenic nitrosamines, thus diminishing the negative impact of nitrates on the human organism. 10 Therefore organic vegetables can play an important anticarcinogenic role. Plant-based phenolic metabolites are particularly interesting because of their potential antioxidant activity and medical properties, including anticarcinogenic activity. 15 According to Benbrook,16 organic farming has elevated antioxidant levels in about 85% of the cases studied to date and, on average, levels are about 30% higher compared with foods grown conventionally. Mineral compounds containing iron, magnesium and phosphorus are fundamental for human health. According to Worthington,17 the higher mineral content in organic crops may be connected with the higher abundance of micro-organisms in organically managed soil. These micro-organisms produce many compounds that help plants to combine with soil minerals and make them more available to plant roots. Unfortunately, there have been only a few studies on other vitamins such as ? -carotene, B1 and B2 and the results are contradictory. Therefore no general conclusions can be drawn about these compounds. Total sugars A higher total sugar content in plant crops not only improves their taste but is also an important component of their technological quality, e. g. in the case of sugar beet. Studies clearly indicate a higher content of total sugars, mainly sucrose, in organically produced vegetables and fruits such as carrots, sugar beet, red beetroot, potatoes, spinach, Savoy cabbage, cherries, redcurrants and apples. 11,18 Proteins Several studies analysed in review papers11 show that the quantity of crude protein is lower in organic than in conventional crops but that the quality is better as measured by essential amino acid content. According to Worthington,17 nitrogen from any kind of fertiliser affects the quantity and quality of protein produced by plants. Provision of a large amount of nitrogen to a plant increases protein 2760 SENSORY QUALITY OF ORGANIC FOODS Many studies have proved quite unequivocally that vegetables and fruits from organic farms have a better taste and smell. This was found for carrots and potatoes, celery and red beetroot, head cabbage and tomatoes as well as for apples, cherries and redcurrants. 11 Organic fruits contained more total sugars, which probably in?uenced the better taste perception by consumers. Better taste and smell have also been found for bread made from organic grain, which also had better crumb elasticity. 6 Interesting studies have been conducted on animal food preference in which animals were given organic or conventional fodder. Most studies have proved a clear animal preference for foods produced organically; such studies have been conducted on rats, mice, hens and rabbits. 19 Preference for organic fodder was also observed in cases where, according to chemical analyses, both organic and conventional fodder ful? lled all physiological needs of the animals tested. 20 The reason for this was probably the difference in taste between organic and conventional fodder. STORAGE QUALITY OF ORGANIC PLANT CROPS Transpiration losses and decay processes, as well as changes in nutritive value, normally take place during the storage period of potatoes and other vegetables. However, these changes can proceed at different rates and to differing degrees. Most of the available data indicate that the decay process is slower in organic crops, which therefore show better storage quality after the winter period. A review study based on many sources21 concluded that the storage quality of vegetables and fruits was better in the case of plants grown on organic farms (Table 2). The better storage quality of organic crops Table 2. Storage losses of carrots, potatoes and various fruits and vegetables from organic (ORG) and conventional (CONV) farmsa Carrots Potatoes Fruits and vegetables ORG CONV ORG CONV ORG CONV Number of quoted studies Storage loss (% of initial mass) a 15 33 15 40 22 22 22 30 53 28 53 38 Average data based on literature review. 21 J Sci Food Agric 87:2757–2762 (2007) DOI: 10. 1002/jsfa Quality of organic plant products Table 3. Positive nutritive attributes of organic plant products No. 1 2 3 4 5 Attribute Organic crops contain fewer nitrates, nitrites and pesticide residues than conventional crops. There is no clear difference in the content of heavy metals between organic and conventional crops Organic plant products contain, as a rule, more dry matter, vitamin C, phenolic compounds, essential amino acids and total sugars. However, the level of ? -carotene is often higher in conventional plant products Organic plant products contain statistically more iron, magnesium and phosphorus. They also tend to contain more chromium, iodine, molybdenum, selenium, calcium, boron, manganese, copper, potassium, sodium, vanadium and zinc Organic plant products usually have better sensory quality. They have a clearer smell and taste and are sweeter and more compact because of their higher dry matter content Preference for organic products is typical not only for humans but also for animals such as rats, rabbits and hens. This preference was also observed in cases where, according to chemical analyses, both organic and conventional fodder ful? lled all physiological needs of the animals tested Vegetables and fruits from organic production maintain better quality during winter storage, showing lower mass losses due to transpiration, decay and decomposition processes. A possible reason for this is their higher content of dry matter, minerals, sugars and other bioactive compounds 6 Table 4. Negative and unclear aspects of organic plant products No. 1 Negative aspect Plants cultivated in organic systems have, as a rule, signi?cantly (on average 20%) lower yields than conventionally produced crops. This increases their price and creates for many consumers a barrier to buying organic foods Unclear aspect Environmental contamination (heavy metals, PCBs, dioxins, aromatic hydrocarbons) can be similar in organic and conventional crops, because the impact of industrial, transport and communal sources is similar on organic and conventional farms located in the same area Bacterial (mainly Salmonella and Campylobacter) Contamination can sometimes be higher in organic produce, but scienti?c evidence of this is still not clear Mycotoxins can contaminate both organic and conventional foods, but scienti? c data are contradictory The impact of organic food consumption on human health and wellbeing remains essentially unknown in spite of some positive indications, so the subject needs further study 2 3 4 was probably associated with a higher content of dry matter in their ? esh, resulting in less extensive decay and decomposition. Lower losses in organic production have not only nutritive but also economic bene? ts. In conventional systems, high yields are produced but signi?cant losses during storage reduce the economic bene? ts. CONCLUSIONS Recent food crises (BSE, foot and mouth disease, food contamination by dioxins, toxic fungi, Salmonella and Campylobacter bacteria) have caused consumers to look for more authentic and safer foods. Organic food production is widely recognised as being more friendly to the environment, more controlled and better for animal welfare. On the other hand, many data indicate that a lot of food contaminants have their source in conventional methods of agriculture, animal production and food processing. The negative effect of the continuing enthusiastic use of chemical fertilisers and pesticides in agriculture is potentially huge. Therefore safer methods of agricultural production, mostly organic methods, are very important. Studies conducted in various countries have indicated several positive attributes of organic plant J Sci Food Agric 87:2757–2762 (2007) DOI: 10. 1002/jsfa products (Table 3) but also a few negative and unclear aspects (Table 4). To summarise the positives, organic food should be recommended for all, but especially for young babies, pregnant and breast-feeding women, elderly and chronically ill people and vegetarians. The last group obviously consumes a lot of vegetables, which can contain too high levels of carcinogenic substances when produced conventionally. The lower content of nitrates and higher content of phenolic compounds and vitamin C in organic crops are especially important for health. Nitrates are easily converted in the digestive tract into poisonous nitrites, which are the precursors of carcinogenic nitrosamines. This process is hampered by vitamin C, and carcinogenesis is retarded by phenolic compounds and other dietary phytochemicals present at higher levels in organically produced crops. Therefore organic vegetables can play an important anticarcinogenic role. REFERENCES 1 Rembialkowska E, Organic agriculture and food quality, in Ecological Agriculture and Rural Development in Central and Eastern European Countries, Vol. 44 of NATO Science Series, ed. by Filho WL. IOS Press, Amsterdam, pp. 185–204 (2004). 2761 E Rembialkowska ? ? 2 Schuphan W, Biochemische Sortenprufung an Gartenmohren ? ? als neuzeitliche Grundlage fur planvolle Zuchtungsarbeit. Z? chter 2:25–43 (1942). U 3 Franz E, van Bruggen AHC and Semenov AM, Risk-analysis of human pathogen spread in the vegetable industry: a comparison between organic and conventional production chains, in Bayesian Statistics and Quality Modelling in the AgroFood Production Chain, ed. by van Boekel MAJS, Stein A and van Bruggen AHC. Kluwer Academic, Dordrecht, pp. 81–94 (2004). 4 FAO, Food Safety as Affected by Organic Farming (Twentysecond FAO Regional Conference for Europe). [Online]. (2000). Available: www. fao. org/docrep/meeting/x4983. htm. 5 Van Bruggen AHC and Termorshuizen AJ, Integrated approaches to root disease management in organic farming systems. Aust Plant Pathol 32:141–156 (2003). 6 Bjorn G and Fruekilde AM, Cepa onions (Allium cepa L) grown conventionally and organically – similarities and differences. Gron Viden 153:1–6 (2003). (in Danish). 7 Hansen B, Alroe HF, Kristensen ES and Wier M, Assessment of food safety in organic farming. DARCOF Working Paper 52 (2002). 8 EU, Council Regulation No. 2092/91 of 24 June 1991 on organic production of agricultural products and indications referring thereto on agricultural products and foodstuffs. OJL 198, 22. 7 P. 1 (1991). ? 9 Szponar L and Kierzkowska E, Azotany i azotyny w srodowisku oraz ich wplyw na zdrowie czlowieka. Post Hig Med Do? w s 44:327–350 (1990). 10 Mirvish SS, Vitamin C inhibition of N-nitroso compounds formation. Am J Clin Nutr 57:598–599 (1993). 11 Rembialkowska E, Wholesomeness and Sensory Quality of Potatoes and Selected Vegetables from the Organic Farms. Fundacja ? Rozwoj SGGW, Warszawa (2000). 12 BMA, The BMA Guide to Pesticides, Chemicals and Health. Report of Science and Education. British Medical Association, London (1992). 13 Aubert C, Pollution du lait maternel, une enquete de terre vivante. Quatre Saisons Jardinage 42:33–39 (1987). 14 Lundeg? rdh B and M?rtensson A, Organically produced plant a a foods – evidence of health bene? ts. Acta Agric Scand B 53:3–15 (2003). 15 Brandt K and Molgaard JP, Organic agriculture: does it enhance or reduce the nutritional value of plant foods? J Sci Food Agric 81:924–931 (2001). 16 Benbrook CM, Elevating Antioxidant Levels in Food through Organic Farming and Food Processing. An Organic Center of Science Review. Organic Center for Education and Promotion (2005). 17 Worthington V, Nutritional quality of organic versus conventional fruits, vegetables, and grains. J Alternative Compl Med 7:161–173 (2001). 18 Zadoks JC, Development of Farming Systems. Pudoc, Wageningen (1989). 19 Williams CM, Nutritional quality of organic food: shades of grey or shades of green? Proc Nutr Soc 61:19–24 (2002). ? 20 Woese K, Lange D, Boess Ch and Bogl KW, A comparison of organically and conventionally grown foods – results of a review of the relevant literature. J Sci Food Agric 74:281–293 (1997). 21 Bulling W, Qualit? tsvergleich von ‘biologisch’ und ‘konventionell’ a erzeugten Feldfruchten. Regierungsprasidium, Stuttgart (1987). 2762 J Sci Food Agric 87:2757–2762 (2007) DOI: 10. 1002/jsfa.

Social problem of homophobia in todays Canadian Society

Social problem of homophobia in todays Canadian Society This essay seeks to answer the social problem of homophobia in todays Canadian society. Four scholarly sources were consulted and made reference to in this essay regarding homophobia and the conflict theory. The textbook, Sociology your Compass for a New World written by Robert J. Brym, John Lie and Steven Rytina explores the topic of the conflict theory. The conflict theory explains the class struggle in society; the conflict theory can be used to show how homophobes, the upper class people, use their so called power to take advantage of the less powered, homosexuals. Upon reading this essay the reader will be educated on the social problem of homophobia, types of homophobic manifestation, movements against homophobia and how the conflict theory learnt about in chapter one of the textbook, Sociology your Compass for a New World can help us better understand the social conflict created by homophobia. Homophobia in Todays Canadian Society The social problem of homophobia is defined as the fear or hatred towards homosexuals or homosexuality. This fear has negative consequences towards the Canadian society, especially towards the gays, the lesbians and the bisexuals. Homophobia in Canada today can be manifested internally, externally, institutionally, socially and culturally. Homophobia has rapidly increased in the Canadian society, in most part, many not even aware of being homophobic. When one refuses to take part in a social activity because they might be perceived as guy or lesbian is considered a type of homophobia. This type of homophobia is when one is afraid of being supposed as gay or lesbian. The Canadian government has no control over the decision one takes to be homophobic, what they can do is educate the uninformed and reach out to the younger generations, the main source of this social problem comes from the primary agent of socialization, the family. Homophobia is often passed on from generation to genera tion; children are being raised to believe that homosexuals are not wanted in our society. On May 17th 1993, homosexuality was removed from the International Classification of Diseases of the World Health Organization (WHO). Today Canadians celebrate this movement as the International Day against Homophobia and Transphobia. Homophobia may be seen as a class struggle because homophobes associate the gay community as less important than themselves or the normal community. The conflict theory as read about in the textbook, generally focuses on large, macrolevel structures, such as class relations or patterns of domination, submission, and struggle between people of high and low standing. (Robert J. Brym, 2007) The conflict theory explains how homophobes use their power, vulgar words or acts of discrimination, to take advantage of homosexuals who to them, have less power. The conflict theory helps better understand the class struggle homosexuals go through as well as the class inequality. Gay and lesbian adolescents and youth are disproportionately homeless (Health Canada, 1996; Hellquist, 1996). Sexual orientation is a major precipitating factor leading youth to being and staying on the streets (Canadian Public Health Association, 1998), characterized by poverty and often survival conditions. (Ryan, 2003) This conflict created by homophobes has increasingly negative consequences on the gay community. Many homosexuals feel the need to leave their homes and home towns in fear of rejection. This just goes to show how powerful homophobes can be in regards to homosexuals. External, internal, institutional, social and cultural are all different ways in which homophobia can manifest itself. In the most part, homophobic people act negatively towards the gay community by either socially avoiding them, by verbally attacking them or by discriminating against them, also known as external homophobia. Homophobes act this way because they are afraid; they are afraid that homosexuals can convert people to their kind and feel the need to protect their children or their own identity. Homosexuals are discriminated against everyday of their lives, whether it is at school, in the street or at work. There is no getting away from homophobia because of all the norms and policies the Canadian society has created. The society of today is constantly surrounded by homophobic manipulation, most not even aware of it. The general population sees ads on a daily basis, watches the television and reads magazines all of which give off the same impression on homosexuals, which is, that they do not exist. Rarely, will TV shows have a gay couple as the main characters of the sitcom. Cultural homophobia is when one is thought to believe that heterosexuality is better than homosexuality; people are being influenced to believe this every single day of their lives. There is an absence of accurate and positive portrayals of GLB in mainstream media (OHanlan, 1995). There is also a lack of positive GLB role models in society (Morrow, 1993). (Banks, 2004) Most homophobes deny that they are even homophobic. In most cases, homophobes are uninformed on the homosexual community and base their fear on stereotypes, beliefs and myths. In other words, they are afraid of the unknown. Studies have shown that people who are personally involved with homosexuals either as a friend or just a mutual acquaintance demonstrate little to no hatred towards them. Homophobia is still a social problem today because the population has no accurate information on the subject, some religions are against homosexuality, children are not educated on the subject and the consequence of discrimination towards homosexuals is minimal. The reason in which homophobia has increased is due to the coming out of most homosexuals. Before, homosexuals were afraid to admit their sexual orientation because of the consequences they would have to face. Today, more and more homosexuals are coming out making the homophobic community increase. Both may be seen as parallel lines movin g as one. The homophobic line has been showing a slight decrease due to national movements such as the International Day against Homophobia and Transphobia. To conclude, the social problem of homophobia has impacted the Canadian society, in the most part, negatively. Canada has done a great job in trying to put an end to this social problem and discrimination, by participating in the International Day against Homophobia and Transphobia. This is a day not to show off your gay pride, but a day to try and silence the homophobes and speak up against them. Too many people are being hurt by homophobes and most of the time it goes unheard. According to statistic Canada in 2006 police data reported that, More than one-half (56%) of incidents driven by hatred towards a particular sexual orientation were violent, higher than the proportion of incidents motivated by race/ethnicity (38%) or religion (26%). Common assault was the most frequent type of violent offence. (Study: Hate-motivated crime , 2008) It is time for Canada to silence this social problem and become a more united country.

Why Do Emotions Exist? :: essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  Pervading us with an array of highs and lows, ranging from anger and sadness, to love, joy, and contentment, emotions vividly affect our daily lives. So, unequivocally it could be asked, â€Å"Why do emotions exist?† It is possible that the sole, underlying principle of emotions is to create a reaction in people and things in our environment; or perhaps they exist to be our governing channel of communication; or maybe they precisely exist to regulate individual self-confidence and disparage.   Ã‚  Ã‚  Ã‚  Ã‚  The theory that emotions have a sole principle to generate reactions amongst people, things, and their environment, is very conceivable. Every emotion has a cause and effect, and frequently, both are a reaction in others around us. Perhaps the emotions that are expressed by the opening individual have no direct affect on that individual, but on others, and the reaction emotions of others are what cause the effects on the individual. It could be a repetitive chain of events that begins and ends alike.   Ã‚  Ã‚  Ã‚  Ã‚  Since emotions are typically needed to communicate successfully, this gives way to the possibility that emotions exist to be our governing channel of communication. The level of understandability and intensity of communication is exceedingly dependant on the amount of emotion used. Emotionless verbal communication is complex to understand, uninteresting and monotonous. Emotionless nonverbal communication is generally next to impossible to comprehend, and is the borderline of understanding and bewilderment. Communication could be straightforwardly thought of as expressed emotion.   Ã‚  Ã‚  Ã‚  Ã‚  Maybe, instead of, or in addition to, having a principle to create reactions and to be a major channel of communication, emotions precisely exist to regulate individual self-confidence and disparage. External, as well as internal, emotions are often used to compliment and criticize a person’s own character. Emotions control a person’s level of confidence, or lack there of, in their success and individuality. Perhaps this self-determining strength and weakness alike could be the rationale.   Ã‚  Ã‚  Ã‚  Ã‚  Ã¢â‚¬Å"Why do emotions exist?† is a question that could be answered with numerous possibilities; each of those possibilities being parallel to other.

Douglas N. Husaks A Moral Right to Use Drugs Essay -- Husak Moral Rig

Douglas N. Husak's A Moral Right to Use Drugs In Douglas N. Husak’s A Moral Right to Use Drugs he attempts to look at drug use from an impartial standpoint in order to determine what is the best legal status for currently illegal drugs. Husak first describes the current legal situation concerning drugs in America, citing figures that show how drug crimes now make up a large percentage of crimes in our country. Husak explains the disruption which this causes within the judicial system and it is made clear that he is not content with the current way drugs are treated. The figures that Husak offers up, such as the fact that up to one third of all felony charges involve drugs, are startling, but more evidence is needed than the fact that a law is frequently broken to justify it’s repeal. Husak attempts to discuss drug use legality aside in order to prove his argument. He looks at drug use in a three fold manner exploring; the reasons Americans use drugs, the justifications behind the war on drugs, and a discussion on which drugs, if any, should be affected by the law. In understanding Husak’s beliefs on the reasons for drug use it is first important to look at his definition for recreational use verses drug abuse. Husak defines recreational use as either consumption for enhancement of an experience, such as at a concert, or for alleviation from boredom, like while doing household chores. Husak admits that there are gray areas between this recreational approach and the universally reviled drug abuse. However, Husak is right in saying that drug use that occurs in the ghetto is not recreational, and goes on to explain that rich white people are even more likely to use certain drugs, notably ... ...enough time explaining the benefits of legalization. I agree with his assertion that the burden of proof should lie on the heads of those limiting our freedoms and therefore I personally am not bothered by his attack strategy, but in the grand scheme of trying to further his cause Husak would be served well by discussing the issue in terms of why legalization would help our society. I respect this piece a lot and what I would really like to see is some of Husak’s ideas form implementation, such as educational programs. This article does a lot to tear down the old beliefs that are hurting our society, which is an important first step. Yet, those of us who favor change must remember that removing old views does not bring freedom, it leaves a gap. Freedom is attained when we replace that gap with a morally and legally sound new set of ideals and rules.

Infant Immortality Essay example -- essays research papers

Infant Mortality in the United States   Ã‚  Ã‚  Ã‚  Ã‚  Trends in infant mortality are considered to be a barometer of technology and an accurate indicator of the health of a society. Despite technological excellence and numerous social programs offered throughout the country, the infant mortality rate (IMR) in the United States continues to be a national concern. For many, â€Å"infant mortality† brings to mind the deprivation and poverty found in third world countries. Yet in the United States, nearly 40,000 children die every year for some of the same reasons that cause infant death in underdeveloped parts of the world (Anderson, 1987).   Ã‚  Ã‚  Ã‚  Ã‚  Infant mortality is prevalent in this country despite a richly developed and technologically advanced society. According to the Census Bureau, the IMR in the United States has dropped almost 66 percent in the past three decades (Eberstadt, 1991). In 1960, out of every thousand babies born, 26 died within their first year of life. By 1991, that number had dropped to less than nine out of every thousand babies (Eberstadt et al., 1991). According to the US Department of Health and Human Services (HHS), the US infant mortality rate in 1987 was higher than in 23 other countries or territories, including most of Western Europe, Hong Kong, and Singapore. The US infant mortality rate was about 20 percent higher than Norway’s, nearly 50 percent higher than in the Netherlands, and 200 percent higher than Japan’s (Eberstadt et al., 1991). The United States has not always fared so poorly in this international ranking. In the early 1950’s it ranked sixth best (Anderson et al., 1987).   Ã‚  Ã‚  Ã‚  Ã‚  The Select Committee on Hunger held a Congressional hearing on infant mortality in the United States on April 29, 1987. Representative Mickey Leland (D., TX), the committee’s chairperson, acknowledged the continued statistical improvements over the prior two decades. But he was very critical of the decline of the United States in the international ranking, expressing dismay that a country as wealthy and powerful as the United States should have an infant mortality rate worse than that of 16 other industrialized nations (Anderson et al., 1987). Through mediums such as this hearing and other forums, the federal government addresses this concern and establish... ...rson must strive to ensure that babies survive. No amount of technological skill can combat the preventative measures of proper prenatal care. The ultimate voice of prevention will only be heard by women who have enough maternal instinct to seek available prenatal and infant care. References   Ã‚  Ã‚  Ã‚  Ã‚  Anderson, G. (December 1987). Dying Young: Infant Mortality in the United States. America Press, Inc., 498-501.   Ã‚  Ã‚  Ã‚  Ã‚  Barnes-Boyd, C., Norr, K., & Nacion, K. (1996). Evaluation of an Interagency Home Visiting Program to Reduce Postneonatal Mortality in Disadvantaged Communities. Public Health Nursing Vol.13 No. 3, 201-208.   Ã‚  Ã‚  Ã‚  Ã‚  Eberstadt, N. (Fall 1991). America’s Infant-Mortality Puzzle. The Public Interest, No 105, 111-112.   Ã‚  Ã‚  Ã‚  Ã‚  March of Dimes Birth Defects Foundation. (1996). Birth Defects and Infant Mortality: A National and Regional Profile. Petrini, J. (Ed.).   Ã‚  Ã‚  Ã‚  Ã‚  Strobino, D., O’Campo, P., Schoendorf, K. (December 1995). A Strategic Framework for Infant Mortality Reduction: Implications for â€Å"Healthy Start†. The Milbank Quarterly Vol. 73 No. 4, 27.

Introduction to Calcium Carbonate Essay

Calcium carbonate, also referred to as Calcium trioxocarbonate (CaCO3), is one of the most widely available chemical compounds on the earth. It occurs naturally in the earth crust, and is said to make up approximately 7 percent of the earth’s crust (Calcium Carbonate, 2006). The compound goes by different common names such as calcite, limestone, chalk, pearl, marble, aragonite, etc. Naturally, calcium carbonate can be found in almost all rocks. It can also be found in the hard shells of some organisms such as pearls, snails, and eggshells. Calcium carbonate occurs in two forms with different geometric structural arrangements of the constituent elements (calcium, carbon, and oxygen). The two crystalline forms are calcite and aragonite. Calcium carbonate, when extracted in a pure form exists as a white powder which has a specific gravity of 2.71 (calcite) or 2.93 (aragonite) (Calcium Carbonate, 2006). Calcium carbonate does not dissolve easily in water. It is poorly soluble in pure water. It has a relative molecular mass of 100g/mol. The bond type between the two major ions: calcium ion (Ca2+) and carbonate ion (CO32-) is the electrovalent type. It has the following chemical properties: reaction with acids to liberate carbon dioxide and water, reaction with water and carbon dioxide to form carbon bicarbonate, and production of calcium oxide and carbon dioxide when heated to temperatures above 900oC. Calcium carbonate is a very important compound because it is has numerous natural, health and industrial uses. It is used in medicine as a form of therapy in peptic ulcer diseases. It is used as an antacid as a result of its property of reacting with acids in the stomach, liberating carbon dioxide and water. It is also used in construction industries as building materials. In particular, it is used to make cement or mortar which is used to hold blocks together. Again, calcium carbonate is used in the steel manufacturing companies. It is used specifically to absorb any impurity in the molten steel material. Another use of this compound is in the manufacture of papers and glass. There are different methods of preparation of calcium carbonate. The method which is being investigated in this experiment is one of the most common methods of preparation of the compound. Large amounts of calcium carbonate (especially for industrial uses) are prepared by mining and quarrying. Small amounts can be produced in the laboratory, or can be extracted from a pure mined source. In the laboratory, it is produced by reacting calcium oxide or quicklime (CaO) with water (H2O). This reaction ends with the production of calcium hydroxide (Ca(OH)2). Carbon dioxide is bubbled through calcium hydroxide solution. The end result of this reaction is calcium carbonate (CaCO3). The reactions are as follows: CaO + H20 ———- Ca(OH)2 Ca(OH)2 + CO2 ———— CaCO3 + H2O The significance of this investigation is to examine the possibility of preparing calcium carbonate with the above method. The aim of this experiment is to learn about the preparation of calcium carbonate. This experiment attempts to verify the hypothesis that the above stated method can be used to prepare calcium carbonate.

Effects of Diabetes

Diabetes affects the bodys ability to use course pelf for energy. The main casings of diabetes carry on type 1 diabetes, type 2 diabetes, and gestational diabetes. A person with unrestrained diabetes preempt run into a nap of problems afterwards in life. If not witnessled, diabetes barelyt joint entrust you at take chances for a spate of complications that fuck affect nearly both organ in the body. These organs may include, the heart and strain vessels, the lookb solelys, the kidneys, the buttock endings, and in like manner the mutters and teeth. Later in life a woman with uncontrolled diabetes tidy sum as well human face problems in her pregnancy.A person existing with diabetes has a normal life for the or so part, if they maintain a rock-loving nourishment and keep their diabetes under controlled, however, if it is not controlled it may lead to high trys complications, for example losing a toe, or even off their eyeb each(prenominal)ight. I drive home been a diabetic for half of my life, since the sequence of 12 years old. It takes a lot of hard work and dedication for whizz to control their diabetes, but once it is in control, you potful live a really normal life Diabetes is a illness that affects the bodys use and production of insulin.Insulin is important be generate it is employ to move profits or glucose d unrivaled the slantstream to numerous cells that need it for vanquish possible function in our body. In person dealing with diabetes, the sugar in their bloodstream is not being used, which wherefore(prenominal) dissolvers in high blood sugar levels. With proper influencement and control of the indisposition, many of the diabetic complications mess piece of ass face can be avoided or their complications little harmful. In uncontrolled diabetes, the complications or effect of diabetes can be far reaching, sober and rather devastating.There already is an gaind risk for heart disease even for o ne(a) whose diabetes is under control, but it is more for someone whose diabetes is not properly controlled with medications, sustenanceary changes or the right doctor supervision. This type of uncontrolled diabetes can lead to defile of divers(a) blood vessels, have got hypertension and increase the amounts of cholesterol in the bloodstream, all of which puts one at greater risk for apoplexy and heart attack. Heart disease and blood vessel disease be the biggest complications that people with uncontrolled diabetes face.Approximately 65% of death from diabetes is out-of-pocket to heart disease and stroke. Diabetes can withal cause poor blood liquefy in the legs and feet also known as peripheral artery disease. Many studies give that controlling diabetes can prevent or stop the progression of heart and blood vessel disease. Blood vessel damage or nerve damage can also lead to infrastructure problems that can lead to amputations. Most of leg and foot amputations not related to an injury are due to uncomplainings whom do not stimulate their diabetes under control. Diabetes is the leading cause of sightlessness in the U. S.Uncontrolled diabetes can cause a number of eye problems, some of which can lead to cecity if not handle properly and taken allotfulness of immediately. whatever eye disorders caused by uncontrolled diabetes include Glaucoma, Cataracts, and also Diabetic Retinopathy. My cousin is an eye doctor and she always stresses to me how important it is for me to demoralize my eyes checked yearly. She has said that studies arrangement that having a regular eye exam, and your eyes dilated, along with timely treatment of diabetes-related eye problems could prevent up to 90% of blindness related to diabetes.Along with blindness, diabetes is also known to be the leading cause of kidney tribulation in adults in the U. S. Drugs than drugs that minorer blood pressure, even if you dont have high blood pressure. e trulywhere time, high blood sugar levels can harm the nerves. This can lead to red ink of sensation or feeling which ordinarily starts in the toes or pain and a burning sensation of the feet. Diabetes related nerve damage can also cause pain in the legs, arms, and hands, and can cause problems with digestion, going to the bathroom, or even having sex. masses with diabetes are at high risk for gum disease.Keeping your diabetes under control, seeing your tooth doctor regularly, and taking acceptable daily care of your teeth can prevent gum disease and tooth loss. In a patient dealing with uncontrolled diabetes during or onwards pregnancy, many complications could arise. These might include miscarriages, digest defects or extremely large babies that could result in a difficult vaginal delivery or emergency abdominal delivery section. When my mom was pregnant with me she had gestational diabetes and when I was delivered, she had to have a c-section, because I was 10 lbsTo control your diabetes take time an d effort, but it is possible No two peoples diabetes is quite the same. This is due to the endless varieties of responses and treatments the management of ones diabetes depends mainly on differentiate plans. Meal and exercise plans are very important in the treatment of all kinds of diabetes. These plans care control weight, blood sugars levels, and dish up reduce the chances of needing additional medications. A water-loving diet should include avoiding sugar, eating low fat and high fiber foods.Meals should be eaten regularly and at least trio times a day to control blood sugar levels. The exercise for diabetics, help maintain muscle tone and forcible fitness, it also helps to increase feeling to medications by making the blood circulate to all areas of the body and to lower blood sugar levels. As a diabetic if you do not follow these simple precautions and take your medications, you are setting yourself up for failure Eating right and exercise helps a lot, and as a diabetic I can sure vouch for itIn conclusion, diabetes is a very serious disease that attacks millions of people around the world. It can direct at any age and can happen to anyone. The best way to manage your diabetes is to lose weight, and to maintain a good exercise program and a healthy eating plan. If a healthy diet is not kept up, then severe complications may arise. If a diabetic takes care of themselves by exercising and eating right, then their life can be only as happy as anyone elses.