Green Tea and Weight Loss in Overweight and Obese Adults
Green Tea and Weight Loss in Overweight and Obese Adults
Introduction
Obesity has become a growing health issue which is associated with increased risk of chronic diseases such as coronary heart disease, hypertension, type 2 diabetes, osteoarthritis, stroke, sleep apnea, and certain cancers (Auvichayapat et al., 2008; Maki et al., 2009; Nagao et al., 2005). In the United States there are an estimated 72 million overweight or obese adults (as cited in Maki et al., 2009). Currently, the most effective treatment for obesity is a combination of reducing energy intake and increasing energy expenditure, yet the most popular treatment is pharmacotherapy (Auvichayapat et al., 2008, Diepvens, Kovacs, Nijs, Vogels, & Westerterp-Plantenga, 2005). Recently, researchers have found antiobesity effects in green tea (Maki et al., 2009). The objective of this term paper is to depict the claim of green tea and its effectiveness on weight loss in overweight and obese adults.
Review of the Literature
Overweight and Obese and Weight Loss The basic reasoning of overweight and obese individuals is an imbalance between energy consumption and energy expenditure (Diepvens et al., 2005). To achieve weight loss, a negative energy balance must occur and can be achieved by decreased energy consumption or increased energy expenditure (Auvichayapat et al., 2008; Diepvens et al., 2005). Genetics may also be linked to obesity in several ways. Genetics may be associated with susceptibility to fat storing and the controllability of food intake (as cited in Shepherd, 2009). It has been inferred that green tea may reduce body weight and increase satiety which will positively effect body composition (Auvichayapat et al., 2008; Diepvens et al., 2005; Maki et al, 2008; Nagao et al., 2005).
Components of Green Tea Green tea contains two major active ingredients which may be contributed to combating obesity: catechin and caffeine (Auvichayapat et al., 2008; Diepvens et al., 2005).
Introduction
Obesity has become a growing health issue which is associated with increased risk of chronic diseases such as coronary heart disease, hypertension, type 2 diabetes, osteoarthritis, stroke, sleep apnea, and certain cancers (Auvichayapat et al., 2008; Maki et al., 2009; Nagao et al., 2005). In the United States there are an estimated 72 million overweight or obese adults (as cited in Maki et al., 2009). Currently, the most effective treatment for obesity is a combination of reducing energy intake and increasing energy expenditure, yet the most popular treatment is pharmacotherapy (Auvichayapat et al., 2008, Diepvens, Kovacs, Nijs, Vogels, & Westerterp-Plantenga, 2005). Recently, researchers have found antiobesity effects in green tea (Maki et al., 2009). The objective of this term paper is to depict the claim of green tea and its effectiveness on weight loss in overweight and obese adults.
Review of the Literature
Overweight and Obese and Weight Loss The basic reasoning of overweight and obese individuals is an imbalance between energy consumption and energy expenditure (Diepvens et al., 2005). To achieve weight loss, a negative energy balance must occur and can be achieved by decreased energy consumption or increased energy expenditure (Auvichayapat et al., 2008; Diepvens et al., 2005). Genetics may also be linked to obesity in several ways. Genetics may be associated with susceptibility to fat storing and the controllability of food intake (as cited in Shepherd, 2009). It has been inferred that green tea may reduce body weight and increase satiety which will positively effect body composition (Auvichayapat et al., 2008; Diepvens et al., 2005; Maki et al, 2008; Nagao et al., 2005).
Components of Green Tea Green tea contains two major active ingredients which may be contributed to combating obesity: catechin and caffeine (Auvichayapat et al., 2008; Diepvens et al., 2005).
References: Belza, A., Toubro, S., & Astrup, A. (2009). The effect of caffeine, green tea and tyrosine on thermogenesis and energy intake (2005). Effect of green tea on resting energy expenditure and substrate oxidation during weight loss in overweight females. British Journal of Nutrition, 94(6), 1026-1034. doi:10.1079/BJN20051580 Maki, K Y. (2009). Green Tea Catechin Consumption Enhances Exercise-Induced Abdominal Fat Loss in Overweight and Obese Adults. Journal of Nutrition, 139(2), 264-270. doi:10.3945/jn.108.098293. Nagao, T., Komine, Y., Soga, S., Meguro, S., Hase, T., Tanaka, Y., & Tokimitsu, I. (2005).