Improved menstrual function in obese women with polycystic ovary syndrome after behavioural modification intervention-A randomized controlled trial.

Objective: Lifestyle intervention is the recommended first-line treatment for overweight women with polycystic ovary syndrome (PCOS). However, the efficacy of lifestyle change in improving reproductive function is still unclear.

Design: A randomized controlled trial (RCT) with allocation to a behavioural modification programme (intervention) or minimal intervention (control) for 4 months with a follow-up at 12 months.