What causes PCOS

The exact reason for Polycystic Ovary Syndrome is not completely known, but genes might be behind it. It appears to be hereditary, so your chance of getting affected from PCOS becomes higher if other women in your family also have it, or they suffer from health issues like irregular periods or diabetes. PCOS can be passed down from either your maternal or paternal side.

Many women with PCOS have an imbalance in some hormones, such as:

  • High levels of testosterone – a male hormone, although every woman produce small amounts of it
  • High levels of luteinising hormone (LH) – It triggers ovulation, but if the levels are too high, then it may have an abnormal effect on the ovaries
  • Low levels of sex hormone-binding globulin (SHBG)
  • High levels of prolactin (only in some women with PCOS)