Myo-inositol is a molecule that is naturally created by our bodies and found in some foods. Its physiological role is to modulate the body's reaction to hormone stimuli such as insulin and FSH (follicle stimulating hormone). Insulin is the hormone that governs sugar metabolism, whereas FSH drives follicle growth until ovulation. Both of these hormones' actions are disrupted in women with PCOS (polycystic ovarian syndrome), and various clinical investigations have demonstrated that continual integration of myo-inositol can be beneficial in correcting these women's metabolic and hormonal profiles.