Word: framingham
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Stearns' team examined the vital statistics of 2,238 postmenopausal women participating in the Framingham Heart Study, which has tracked the medical histories of some 14,000 residents of Framingham, Mass., since 1948. Investigators searched for correlations between women's physical characteristics - including height, weight, blood pressure and cholesterol levels - and the number of offspring they produced. According to their findings, it was stout, slightly plump (but not obese) women who tended to have more children - "Women with very low body fat don't ovulate," Stearns explains - as did women with lower blood pressure and cholesterol levels. Using a sophisticated...
...these trends were to continue with no cultural changes in the town for the next 10 generations, by 2409 the average Framingham woman would be 2 cm (0.8 in) shorter, 1 kg (2.2 lb.) heavier, have a healthier heart, have her first child five months earlier and enter menopause 10 months later than a woman today, the study found. "That rate of evolution is slow but pretty similar to what we see in other plants and animals. Humans don't seem to be any exception," Stearns says. (See TIME's photo-essay "Happy 200th Darwin...
...prominent impact than natural selection in the shaping of future generations, people tend to write off the effect of evolution. "Those changes we predict for 2409 could be wiped out by something as simple as a new school-lunch program. But whatever happens, it's likely that in 2409, Framingham women will be 2 cm shorter and 1 kg heavier than they would have been without natural selection. Evolution is a very slow process. We don't see it if we look at our grandparents, but it's there...
...book combines years of the research by the authors with other studies to support its ideas. One of their most striking findings—from a large study that began in 1948 in Framingham, Massachusetts—is that obesity is greatly determined by social networks (some other researchers have questioned this interpretation). According to Connected, “If a mutual friend becomes obese, it nearly triples a person’s risk of becoming obese.” Because of imitation and shared expectations called “norms,” even friends...
...book combines years of the research by the authors with other studies to support its ideas. One of their most striking findings—from a large study that began in 1948 in Framingham, Massachusetts—is that obesity is greatly determined by social networks (some other researchers have questioned this interpretation). According to Connected, “If a mutual friend becomes obese, it nearly triples a person’s risk of becoming obese.” Because of imitation and shared expectations called “norms,” even friends...