Which clinical factors predict Pill-related mood symptoms?

Women with pre-existing mental health problems and those who start using oral contraceptives (OCs) at a young age are at increased risk of developing self-reported mood disorder while taking the contraceptive pill, a study shows.
The data comes from two Swedish studies involving a total of 302 women (mostly younger than 30) with past or current OC use, of whom 145 had experienced adverse mood symptoms while on OCs.