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essays on the effects of dietary supplements
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Cindy Le
Professor Shen
English 301
29 October 2015
Dietary Supplements
According to the U.S. Food and Drug Administration (FDA) official website, a dietary supplement is a product intended for ingestion to add further nutritional value or “supplement” the diet. Dietary supplements can come in many forms such as tablets, capsules, soft gels, gel caps, liquids, or powders. What makes it a dietary supplement is the dietary ingredient it contains. The FDA states that a "dietary ingredient" contains one or more of the following: vitamin, mineral, herb or other botanical, an amino acid (U.S. Food and Drug Administration). Dietary supplements are an alternative that can help ensure that you get an adequate dietary intake of essential nutrients.
The Food and Drug Administration is not required to check on the safety of dietary supplements before they are sold on the market. Before the supplements goes into question or any inspection it has to wait until it receives a report caused by the supplement. Joanna Sax claims in her article, Dietary Supplements are Not all Safe and Not all Food: How the Low Cost of Dietary Supplements Preys on the Consumer, that dietary supplements sold down the aisle from FDA approved over-the-counter (OTC) drugs or nonprescription drugs, are not tested for safety or efficacy prior to market entry (377). Dietary supplements are treated as food within the FDA policies, therefore the regulations for approval are questioned. The author of Dietary Supplements: A Review of United States Regulation with Emphasis on the Dietary Supplement Health and Education Act of 1994 and Subsequent Activity, claims, “Congress and the Food and Drug Administration or FDA struggled to define such boundaries until they finally created an intermediate product group called dietary supplements”(Scarbrough, 2004). The intermediate product group, Dietary Supplement Health and Education Act of 1994 or DSHEA was established mainly for the regulation of dietary supplements and it has a new set of standards that is different from the FDA. The DSHEA attempted to create a balance between foods claiming that they have some health benefits and drugs that have clearly approved health
Vitamin B12 is an essential water soluble vitamin that must be carefully regulated to prevent deficiency related complications in the nervous, gastrointestinal, and cardiovascular systems (e). This review begins with a discussion of B12 absorption and role as a cofactor for L-methylmalonyl-CoA mutase and methionine synthase (e). Laboratory findings are interpreted along with associated disease conditions. Finally, assay methods are discussed including blood smear and complete blood count, B12 competitive-binding immunoenzymatic assay, homocysteine tandem mass spectrometry, methylmalonic acid liquid chromatography tandem mass spectrometry, and the Schilling test.
UV exposure to skin can generate reactive oxygen species (ROS) that cause direct chemical alteration in collagen and increase matrix metalloproteinase (MMP) production leading to collagen break down. In addition, ROS produce mediators that cause skin inflammation. Vitamin C neutralizes ROS and is equally effective against UVA (320-400nm) and UVB (290-320 nm) that are produced due to UV exposure and causes skin-aging and sunburns respectively. Vitamin C is most effective as it exerts its action interacellularly and extracellularly (7).
While you can buy dietary supplements any time over-the-counter, please note that some supplements may have unfavorable drug interaction with other prescription drugs. Always refer to your physician before taking any dietary supplements.
Each of the three major macronutrients — proteins, fats and carb — has important and distinct roles in the body when it comes to weight management, hormonal balance, immunity, development and so on. Here are some of the most important reasons why we need each macronutrient:
Nutritionism is an ideology that believes that the nutrients in foods are the key to understanding them. Nutritionism believers are so focused on the nutrients that food contains that they forget about all other aspects of food. The problem is that consumers rely on packaging to tell them what nutrients a food provides, since nutrients cannot be obviously seen, and they rely on science to tell us what nutrients are good and which are “evil”.
Dietary supplements are used to add additional nutritional value to the diet. Some common forms of supplements include: vitamins, amino acids, minerals, herbs, and enzymes, and can be found in a multitude of forms such as capsules, liquids, gel caps, powders, and tablets. Dietary supplements are becoming increasingly popular among Americans today. According to the Centers for Disease and Control, “Over half of the adults in the U.S. use at least one type of dietary supplement, the most common being multivitamins.”1 Many use these vitamins because they are believed to present a number of benefits, such as helping or treating diseases, etc. While dietary supplements can be beneficial to your health; Americans should also be cognizant of the health
The role of dietary factors in the etiology of several cancers has been extensively investigated over the last few years including colorectal cancer (Bazensky I, Shoobridge-Moran C, Yoder LH, 2007). Cohort as well as case-control studies have been designed; they include a progressively larger number of subjects and are based on increasingly more detailed information (Manjinder S. Sandhu, Ian R. White, and Klim McPherson, 2001). However, considerations must be made when selecting appropriate dietary assessment methods for these studies. Accurate estimates of habitual dietary intake remain a challenge in the study of diet-disease relationships (Jackson et. Al, 2011). This is because dietary assessments could be affected by a number of factors such as motivation to complete assessments and reporting bias associated with unstructured eating patterns, concerns with body image and weight status (Livingstone MB et. al, 2009). Besides these, the study design, outcomes of interest , and available resources need to be taken into consideration when selecting an appropriate dietary assessment tool for a particular study (Jyh Eiin Wong et. al, 2012).
Vitamin B12 deficiency, or Cobalamin deficiency, occurs frequently among elderly people. Vitamin B12 is a nutrient that helps keep the body's nerve and blood cells healthy and helps make DNA, the genetic material, in all cells. Vitamin B12 also helps prevent a type of anemia called megaloblastic anemia that makes people tired and weak. Often times, the symptoms of this deficiency are undetectable because the signs are subtle. This creates several issues including identifying those at risk for deficiency and providing those individuals with the correct treatment. Throughout the paper I will address issues such as the causes and evaluations, treatments and procedures, and dietary impacts of vitamin B12 deficiencies using several studies related to vitamin B12 deficiency within the elderly. The purpose of this paper is to determine what the effect of lack of vitamin B12 has on the elderly and what, if any, can be a preventative for such deficiency.
In Lee Ann Fisher Baron’s “Junk Science,” she claims that the “food industry with the help of federal regulators” sometimes use “[a science that] bypasses [the] system of peer review. Presented directly to the public by…‘experts’ or ‘activists,’ often with little or no supporting evidence, this ‘junk science’ undermines the ability…[for] everyday consumers to make rational decisions” (921). Yet Americans still have a lot of faith in the U.S. Food and Drug Administration (FDA). According to a 2013 Pew Research study, 65% of Americans are “very favorable” or “mostly favorable” of the FDA. When it comes to what people put in their bodies, the FDA has a moral obligation to be truthful and transparent. The bottom line of the FDA’s myriad of responsibilities is to help protect the health of Americans. Deciding what to eat is a critical part of living healthily, and consumers must be able to trust that this massive government agency is informing them properly of the contents of food. While the FDA does an excellent job in many areas, it has flaws in other areas. One of its flaws is allowing the food industry to print food labels that are deceptive, unclear, or simply not true (known as misbranding). This is quite the hot topic because a Google search for “Should I trust food labels” returns well over 20 million results, many of which are blog posts from online writers begging their readers not to trust food labels. HowStuffWorks, a division of Discovery Communications, published an online article whose author claims that “[the food industry] will put what they want on labels. They know the game….” While the food industry is partially at blame for misbranding, the FDA is allowing it to happen. If a mother tells her children that it is oka...
Deficiency of vitamin B12 raises the level of homocysteine in the body which in turn has a negative effect on brain function, memory and ability to think. Homocysteine decreases acetylcholine, a vital brain chemical that acts as a messenger and assists in carrying signals to other cells. Imbalances in acetylcholine lowers the ability to form memories.
Healthy diet, according to “CDC-Dietary guidelines for Americans 2010, diet which emphasizes eating foods rich in fiber, potassium, vitamin-D, calcium such as beans, eggs, vegetables, fruits, nuts and low fat milk and milk products, and also Low in saturated fats, cholesterol, trans-fat, salt and added sugars, within a day calorie need”. But if you were taking more dairy, little servings of vegetables, fruits, and proteins, and then piling up as many fats, grains and superfluous oils, you are accurately near to the depiction of modern American diet. Yes unhealthy diet is a major contributor to poor health and health disparities.
A dietary supplement is a product other than tobacco that contains one or more dietary ingredient, and those include vitamins, minerals, herbs, or other
Investigation into the effect of storage or cooking on the vitamin C content of a food substance:
As increasing rates of complementary and alternative medicine (CAM) are becoming intertwined within traditional western practice, it has begun to present itself as a social conundrum. It is believed that the first practices of alternative medicine date back to the mid eighteenth century where as ancient Egyptians were using forms of traditional medicine in the early 5th century BCE. Because it has not been practiced as long as traditional western medicine, it has been framed as a social phenomenon. Its growth is curious in that it is beginning to surface in “countries were Western science and scientific method generally are accepted as the major foundations for healthcare, and “evidence-based” practice is the dominant paradigm” (Coulter & Willis 2004). Current US policy and government regulations, like the National Center for Complementary and Alternative Medicine, have allowed for CAM to become an integrative part of modernity. This paper examines how the defining of CAM has influenced past and present societal reforms and how the lack of a singular, all encompassing definition was once problematic in CAM’s ability to converge with traditional western medicine. However, due to the growing appeal of CAM’s treatment methods, economic and political factors have paved a path a successful integration into modern medicine.
In 2011, anthropologist Ellen Messer acknowledged that in spite of having enough food to feed the entire population on the Globe, more than 100 million people experienced shortages of food and nutritional deficiencies (as cited in Wiley & Allen, 2013, p.92). Thus, it is very important to consider analyzing various factors that influence nutritional status and its relationship with health.