One of the biggest effects of polycystic ovary syndrome experienced by women other than irregular periods, hirsutism, fertility issues has to be the issue of weight gain. There is a direct link between weight gain and polycystic ovary syndrome.
Source:- https://www.reddit.com/r/ImmunitySupplements/comments/nuwn1l/hows_pcos_related_to_weight_gain/
