In the last 25 years, the prevalence of being overweight or obese among adults ages 20 to 59 rose from 53 to 66 percent of the population. At the same time, the proportion of those people who reported they were trying to lose weight during the past year dropped from 56 to 49 percent.
Fewer people may be trying to lose weight because of increasing social acceptability of higher body weight, the researchers suggested. Moreover, they wrote, “the longer adults live with obesity, the less they may be willing to attempt weight loss, in particular if they had attempted weight loss multiple times without success.”
Also see 18 Keys to Healthy Weight Loss.