Loneliness and desire for thinness explain sex differences in adolescent internalizing problems.
Published in Nature Human Behaviour, 2026
A longitudinal study of 3,171 Tokyo adolescents, co-designed with the Bridging Divides Young Persons Advisory Group, found that by age 16, female participants had roughly twice the prevalence of depressive symptoms and suicidal ideation as male participants. Loneliness and a reported desire to be thin, measured at age 14, were estimated to account for about a third to nearly half of that gap in effect terms, suggesting these social factors as potential targets for interventions informed by young people.
Recommended citation: Narita, Z.C., Knowles, G., Sawyer, S., Yamasaki, S., Moreno-Agostino, D., DeVylder, J. Niimura, J., Nakajima, N., Yamaguchi, S., Hosozawa, M., Nakanishi, M., Sawai, Y., Nagaoka, D., Sasaki, R., Zhou, R., Yamane, N., Cosse, J., Stanyon, D., Goto, H., Tanaka, R., Uno, A., Usami, S., Ando, S., Furukawa, T.A., Shinozaki, T., Kasai, K., Patel, V., Nishida, A., & Bridging Divides Young Persons Advisory Group. (In press). Loneliness and desire for thinness explain sex differences in adolescent internalizing problems. Nature Human Behaviour.
Download Paper | Download Bibtex
