[Attempts to Lose Weight and Related Factors according to Body Mass Index among Adults in the Republic of Korea, 2013-2021].

We studied the self-perception of weight status as obese, attempts to lose weight, and related factors according to body mass index in Korean adults using the data from the 2013-2021 National Health and Nutrition Examination Survey. In 2019-2021, 28.3% of normal weight women in their 20s perceived themselves as obese, and 16.2% of underweight tried to lose weight. The rate of perceived weight status as obese has increased since 2013 to 84.6% in men and 94.7% in women with obesity in 2019-2021. However, the rate of attempts to lose weight have decreased to 54.4% in men and 66.1% in women with obesity in 2019-2021. A younger age, a higher level of education, and perceived themselves as being obese, non-aerobic physical activity were associated with attempts to lose weight among both men and women. In women, perceived stress, binge drinking, and excess intake of energy/fat, individuals without chronic disease were associated with attempts to lose weight, whereas in men, current non-smoker was associated with attempts to lose weight.