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Obesity is defined as body weight of 15percent or more above the ideal for one’s height and age.【C1】______this criterion，about one third of the adult population of the United States is obese.The【C2】______of obesity vary in different races，cultures，sub-cultures，and social classes.In industrialized countries，fatness tends to be【C3】______correlated with socioeconomic status：people in lower social classes tend to be more obese.In economically backward nations，the direction of the correlation is reversed；the richer，the fatter.The situation in the underdeveloped world probably approximates the【C4】______of affairs through most of human evolution.Particularly for women，【C5】______pregnancies could 【C6】______into times of scarcity，larger internal food【C7】______were adapted in the face of variable external reserves.
Although obesity may sound like a （n）【C8】______phenomenon，it is to some degree【C9】______relative.A study of black and white undergraduates yielded【C10】______results.Even though blacks，and especially black females，were heavier than whites，they were more satisfied with their weight and less likely to find weight in other people【C11】______Men were more concerned【C12】______the weight of their dates than women were，but black men were【C13】______likely to refuse to date a woman because of her weight.
Contemporary North American culture is【C14】______with thinness，particularly for women.Compared to the Rubenesque view of beauty of just a few centuries ago，the prototypes of feminine beauty【C15】______in the mass media today look emaciated，that is，extremely thin.The standards have even changed【C16】______since the 1950s，when the prototype was replete with large breasts and slightly protruding abdomen.A study of Playboy centerfolds found a ten percent decrease in the ratio of weight to height from the late 1950s to the late 1970s，【C17】______by a dramatic increase in the number of articles on dieting in popular women’s magazines.In【C18】______to contemporary Western societies，some other cultures【C19】______beauty with bulk.This most often occurs in societies in which food is scarce，【C20】______women who are healthy and have more resources tend to be heavier and hence are seen as more attractive.