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Critically evaluate 3 popular fat-loss programs - Assignment Example

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Comparative Analysis of Popular Fat Loss Diets Name:  Institution:       Comparative Analysis of Popular Fat Loss Diets Obesity is a prevalent condition in the United States and much of the developed world. Research findings from a study conducted by the “National Health and Nutrition Examination Survey” (NHANES) in the 2007-2008 period show a worrying figures with regard to weight gain…
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Download file to see previous pages Additionally, obesity or overweight conditions pre-dispose individuals to other secondary health complications such as type II diabetes and cardiovascular conditions. The cognizance of these facts has led to increased concern with weight reduction and ‘fat loss,’ both of which are meant to prevent obesity and overweight conditions (Diets in Reviews.com, 2011). A number of fat reduction diets have been proposed as effective solutions to weight loss. All these diet programs have one significant focus, which is the reduction of body fat, which is largely responsible for the condition. In spite of there being a single aim, these dietary programs are structured differently and their theoretical bases also differ. Some of these dietary programs include Ornish, Atkins, Zone and Learn-just to mention, but a few. The aim of this paper is to make a comparative analysis of three diet programs with the aim of comparing their aspects from a number of perspectives. The review shall look at Atkins, Zone and Learn diets. Atkins Diet The Atkins diet is a ketogenic diet focused on enhancing burning excessive fats in the body. The diet reduces carbohydrate intake so as to switch the metabolism of the body from glucose metabolism to fat ketosis (Agus et al., 2000). Therefore, instead of the body acquiring its energy from glucose metabolism, it switches to burning fats as an alternative energy source. Ketosis is trigged by low insulin levels and this begins when the level of blood glucose is low-insulin levels are always low when blood glucose is low under normal conditions. Low insulin levels trigger lipolysis, which uses fats to produce ketones (WebMD.com, 2012). This outcome depends on hormonal changes in levels of epinephrine, growth hormone and glucagon. The control of carbohydrate intake in this diet lowers blood glucose, and therefore, prevents levels of insulin from rising. In order to reduce glucose levels the diet recommends a low carbohydrate diet with an increased fiber content that is meant to reduce food energy because of its low digestibility. Atkins diet consists of phases namely induction, ongoing weight loss, pre-maintenance and life-time maintenance. The induction phase is the very restrictive in nature and meant to significantly reduce carbohydrate intake so as to trigger ketosis. This phase takes about two weeks. The second phase is the ongoing weight loss program that allows minimal incremental intake of carbohydrates at levels that cannot facilitate weight increase (Gardner et al., 2007). The pre-maintenance phase is the third phase. This phase is used to increase intake of carbohydrates gradually with an aim to establish a ‘critical level’ at which the intake should be maintained. The life-maintenance phase is the last phase, which is meant to maintain the habits already acquired to prevent a relapse. The preferred foods in Atkins diet include unprocessed whole foods and whole foods with a low glycemic index. Less than 20% of the caloric intake should be from saturated fats (WebMD.com, 2012). Vegetable oils, olive oil and butter are allowed at about for ounces per meal. High glycemic foods are avoided in the induction phase. Legumes should also be avoided because of their starchy content. The minimal carbohydrate intake in the initial phase is supposed to come from fruits and other forms of recommended ...Download file to see next pagesRead More
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