Hyperinsulinemia, or elevated blood insulin levels, is an endocrine disorder most often found in patients with polycystic ovarian syndrome (PCOS). PCOS is characterized by irregular menstrual periods, hormonal imbalances, and the presence of an increased number of small follicles on the ovaries. PCOS occurs in varying in degrees. Some women with PCOS may also experience excessive hair growth, hair loss, acne, and obesity.
Hyperinsulinemia is believed to contribute to hormonal imbalance in the pituitary gland and ovary. This leads to an increased level of lutenizing hormone (LH). Increased levels of LH are then believed to cause ovulation disorders, menstrual irregularities and infertility.