Does obesity cause irregular periods?
It’s not necessarily because she is overweight as I have friends that are obese and they have normal periods. It can in some cases though just as being under weight can also cause lack of periods. It’s most likey to be caused by a hormonal problem like pcos or an under active thyroid both of which can cause a person to be obese and thus affect the menstrual cycle. I would suggest she goes to her gp and ask for blood tests to check if she suffers from either of these problems this is also more like if she has other symptons too – hair in male pattern ie on face, chest acne male pattern hair loss painfull periods heavy periods or really light periods spotting in between periods periods lasting for longer than expected irregular periods extreme tiredness.