"If you are not obese then also you can get PCOS. It is more difficult to treat because obese people we can tell at if they decrease 1% of their body weight your PCOS will be going down by 50%. But already if you are a thin person they do not reposed easily to treatment because they are having more insulin referee even when they are tested for infertility. Higher doses of injection causes ovarian hyperstimulation syndrome, That is why we put them on insulin sensitizing agent called as Metformin, Metformin sensitizes the vases to insulin and this helps in getting better result in polycystic ovary disease in thin individuals. So along with a healthy lifestyle should help them"