University of Minnesota Project Eating Among Teens (EAT) researchers have found that young adults engaging in casual sexual encounters do not appear to be at increased risk for harmful psychological outcomes as compared to sexually active young adults in more committed relationships. While this study focused on the psychological impact, researchers caution that the physical risks of casual sex should not be overlooked.

Marla E. Eisenberg, Sc.D., M.P.H., Medical School, and colleagues used data from Project EAT, an ongoing study that assessed a diverse sample of 1,311 sexually active young adults. From 2003-2004, 574 males and 737 females in Minnesota with a mean age of 20.5 were surveyed regarding sexual behaviors and emotional well-being.

Science Daily: Casual sex not found to be psychologically dangerous for young people