from journal Nature Medicine
Why do some people gain weight as they get older? The answer may be in research from the Karolinska Institute in Sweden. It shows turnover—that is removal and replacement--within fat cells decreases as we get older. That aging process seems to occur whether we lose or gain weight. However, people in the study who didn’t compensate by eating fewer calories gained a significant amount of weight over the study period. Authors of the study in the journal Nature Medicine say this is the first time to show behavior of fat cells regulate body weight during aging independent of other factors. This study supports earlier findings that one way to speed up activity in fat cells is to exercise more in addition to eating less.