Tuesday, March 16, 2010
Obesity and Evolution
According to statistics, about 58 million Americans are overweight. Needless to say, this is directly caused by consuming too many calories, especially fats (fats have twice as many calories/gram). However, some research suggests that human obesity may in fact be related to evolution. Why might have being overweight have been a selective advantage in the past? Is being overweight still a selective advantage today? To what extent does research show that being overweight is genetic? What are the risks of being overweight? Do you think the risks of being overweight will eventually lead to the natural selection of those who are not overweight?