Obesity epidemic correlates with use of infant formula

http://en.wikipedia.org/wiki/Infant_formula

http://news.yahoo.com/s/ap/20090701/ap_on_he_me/us_med_obesity_rankings

Here are two quotes from those articles.  Notice the time period in years.  About 50-60 years ago, formula feeding was becoming very popular.  Now, doctors are noticing that people in their 50s and 60s are the fattest.  The older generations, however, are still thin.

http://en.wikipedia.org/wiki/Infant_formula

Evaporated milk formulas

In the 1920s and 1930s, evaporated milk began to be widely commercially available at low prices, and several clinical studies suggested that babies fed evaporated milk formula thrive as well as breastfed babies[6][16] (these findings are not supported by modern research.) These studies, accompanied by the affordable price of evaporated milk and the availability of the home icebox initiated a tremendous rise in the use of evaporated milk formulas.[1] By the late 1930s, the use of evaporated milk formulas in the United States surpassed all commercial formulas, and by 1950 over half of all babies in the United States were reared on such formulas.[6]

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http://news.yahoo.com/s/ap/20090701/ap_on_he_me/us_med_obesity_rankings

And while the nation has long been bracing for a surge in Medicare as the boomers start turning 65, the new report makes clear that fat, not just age, will fuel much of those bills. In every state, the rate of obesity is higher among 55- to 64-year-olds — the oldest boomers — than among today's 65-and-beyond.