A new study has linked birth control use with symptoms of depression among teen girls.

The study, published in JAMA Psychiatry, collected information from 1,010 teenage girls over a span of nine years. During that time, the young participants reported experiencing more crying, sleeping and eating problems than teens of the same age that were not on oral contraceptives. Teen blues, or depression among teen girls, should be closely monitored.

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Co-author Dr. Hadine Joffe, vice chair for research for the Brigham and Women’s Hospital Department of Psychiatry, explained in a statement, “Ours is the first study of this scale to dive deep into the more subtle mood symptoms that occur much more commonly than a depression episode but impact quality of life and are worrying to girls, women and their families."

The important takeaway from the study is to monitor emotional changes when teen girls are on the pill. To obtain information about contraception, visit the websites of the American College of Obstetrics and Gynecology and Planned Parenthood.