PCOD/PCOS patients most commonly display abnormal or irregular menstrual cycles. This is caused due to the disturbed hormonal status. PCOS patients have a very high level if Luteinizing hormone (LH) levels from the beginning of the menstrual cycle. The Follicle-Stimulating Hormone (FSH) levels will be low, and a very high level of testosterone. This leads to irregular formation of the female sex hormones. Dr. Rashmi Chaudhary explains how irregular periods and PCOD are linked. For more information visit care.com