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| nuclear age history, milk, living, health articles, hewlettpackard, bikini atoll, cooking hints, copystar, omega 3 fatty acids, vitamins, burn, loss of weight, electrical impedance, pentabasol, hyeana, medline, chubby, eggs, | Among the 87 lean and obese people in the study, 59 were Americans of different ethnicities and 28 were Pima Indians, a population with high rates of obesity. The people ranged in children age from 20 to 65 and included 50 women and 37 men. For children two days prior to the study, all participants ate a standardized, 35 percent fat diet that was calorically children adjusted to maintain their weight. The Pima Indians received a diet that was 30 percent fat. The 13 dieting participants ate low calorie diets, 520 to 800 calories per day. The investigators measured individual's leptin levels in blood samples and ob gene activity in fat tissue. Friedman and Maffei's coauthors include: Jeffrey L. Halaas, Gwo-Hwa Lee, Ph.D., Yiying Zhang, Ph.D., Hon Fei, Ph.D., and Sharon Kim at Rockefeller; Eric Ravussin, Ph.D., |
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| Also, three strains of bikini atoll overweight, nonmutant mice had increased leptin levels bikini atoll ranging from 25 to seven times more than littermates. Leptin levels in fatty (fa) mutant rats were 50 times greater than that of non-mutant litter mates. Dieting decreased leptin levels in the 13 people studied, the scientists report, and, in general, the greater their initial leptin level, the more it declined with dieting. Similarly, in normal mice, leptin levels dropped to 60 percent of the pre-diet amount after a three-day fast and 20 percent after a six-day fast. In bikini atoll db mice, leptin levels did not drop after 15 days of restricted food, but after 28 days of dieting, the mice had no detectable levels of leptin in their blood, and tests revealed reduced ob gene activity. |
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