"In a given year, the average obese woman has roughly a 1 in 124 chance of returning to a normal weight. And for obese men, the odds are even worse: 1 in 210. As if that weren't bad enough, obese men and women have very low odds attaining even a 5 percent weight loss in a given year: 1 in 10 for women, and 1 in 12 for men."
https://www.washingtonpost.com/news/wonk/wp/2016/01/29/the-age-when-you-gain-the-most-weight/?tid=a_inl
https://www.washingtonpost.com/news/wonk/wp/2016/01/29/the-age-when-you-gain-the-most-weight/?tid=a_inl