Buckwheat, oat (all of which can lower blood pressure, blood fat and blood sugar), millet, potato, bitter gourd, wax gourd, spinach, carrot, wormwood, celery, coriander (also called coriander or coriander), water spinach, shepherd's purse, bracken seeds, etc.

I think because you have PCOS, the doctor will give you some medicine for treatment. As a student, you should pay attention to balanced nutrition. If we blindly follow the diet of diabetics to reduce blood sugar and lose weight, but ignore the nutrition needed for treatment, it is not worth the candle. I suggest that you can eat some foods with low sugar content to ensure the sugar you need every day, and you can also add a little vitamin to enhance your immunity.

Also, you can go to the bookstore to find some books about nutrition and diet, which will help you.