] After tens of thousands of generations of human
] evolution, flab has become widespread only in the past 50
] years, and waistlines have ballooned exponentially in the
] last two decades. In 1980, 46 percent of U.S. adults were
] overweight; by 2000, the figure was 64.5 percent: nearly
] a 1 percent annual increase in the ranks of the fat. At
] this rate, by 2040, 100 percent of American adults will
] be overweight and "it may happen more quickly," says John
] Foreyt of Baylor College of Medicine, who spoke at a
] conference organized by Gifford's Oldways group in 2003.
] Foreyt noted that, 20 years ago, he rarely saw 300-pound
] patients; now they are common.

A long article on obesity.

The Way We Eat Now