The insulin is probably a big part of the extra hair. The insulin stimulates the cells of the ovary to produce more male hormones. These extra male hormones right in the ovary mess up ovulation. Insulin can also suppress the liver substance SHBG (sex hormone binding globulin) which is supposed to bind male hormones and keep them inactive and there for in check. So the more deranged your metabolism is, the heavier you get, the worse your PCOS gets.
So how to fix: well to some extent there is no fix, it’s in your genes, but it can be controlled. Control anything and everything diet: lower bad LDL cholesterol, lower the blood fat triglyceride, exercise and increase good HDL cholesterol, slim by even 5%, control the sugar and use diabetic drugs like metformin if you need to. But watch for side effects of the medications used to control insulin and blood sugar. Metformin can have its negative side, it can lower vitamin B12 levels (side effects of low B12 levels might include numbness, other odd neurologic symptoms such as memory loss and behavior changes). Oral contraceptives can suppress the boy hormones of the ovary, so that’s a good bet that it will be recommended as a possible solution by your gyno.
The fix for PCOS is not simple, and the more we learn, the more we know that we have to follow our PCOS patients closely, check their sugars, scan their gall bladders, check their hormone levels, discuss contraception carefully, help them control their weight, and help them when they want to get pregnant, there's a lot to gab about here!