Obesity and the wealthy

For a long ime the majority of obese people in the United States were from the low income bracket, earning under 25,000 dollars. Recently however the wealthy are closing the obeseity gap, statistics show that 28% of people earning over 60,000 dollars a year are obese, while in the 1970's only 9% of that group were obese. The poor on the other hand in 1970 were almost 23% obese and today that figure is up to 33%. (These dollar amounts have been inflation adjusted). Obesity is a growing problem in America, child obesity has more thab doubled in the past 25 years, and it is shown that it can shorten one's life span 2-5 years.