Researchers at the University of Missouri have proved what may not come as a surprise to many: “surveillance use” of Facebook leads to depression.

The study, conducted by Margaret Duffy, professor and chair of strategic communication at the MU School of Journalism, and Edson Tandoc, a former doctoral student at MU, surveyed young Facebook users finding that those who use the site to stay in touch with friends and share important life events exhibited little negative effects compared to those who use the site for surveillance.

Surveillance use of Facebook occurs when people measure their lives against those of their friends. Facebook posts about vacations, children, cars, and happy relationships were noted to evoke feelings of envy amongst these users, and this envy is linked to depression.