الفهرس 
Anatomy of the stomachOnly 14 pages are availabe for public view
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Abstract
Obesity is an excessive accumulation of energy in the form of body fat, which impairs health. Obesity increases the risk of type I1 diabetes,cardiovascular disease, arthritis, some forms of tumours and other various diseases. Obesity is part of a series of overlapping syndromes,which represent the phenotype of survival genes, in an environment of plentitude.It is possible that millions of years ago, when food and water were not easily available, individuals developed a very efficient system to utilize and store energy, salt and water. Conversely, descendants of those same individuals, living in a new environment of plentitude, would develop obesity and potentially other characteristics of the metabolic syndrome (Buchwald and Williams, 2004).Obesity is part of a group of diseases called ”complex diseases”.The phenotype of complex diseases reflects the multifactor effect of all contributing genes (polygenic) and all environmental factors. Currently,none of the genes contributing to the common fonn of human obesity are known. However, the genes contributing to several monogenic fonns of obesity have been identified in the last five years.