Welcome from me too, latecomer.
Do you have any more information about your cholesterol? The reason I ask is that the total cholesterol value doesn't mean very much. What is more important are the levels of HDL cholesterol, LDL cholesterol and in particular your triglyceride levels.
If HDL is high and LDL and trigs are low, you will have low risk of heart disease, but if HDL is low and LDL and trigs are high, your risk is much greater. The total cholesterol might be exactly the same in each case, but the CHD risk quite diferent.
In any event, insulin is a significant influence on these numbers. Typically, the more insulin, the higher the trigs and the lower the HDL. As insulin levels fall, HDL rises.
Ask your doctor for these numbers, because it will give you a much clearer picture of where the problems might be.
All the best,
fergus