Yolks are high in cholesterol? I have a family history of high cholesterol.
Maybe oatmeal will help battle the cholesterol? I've read that some studies indicate that oatmeal actually reduces the bad cholesterol; it would explain why folks in Scotland and other places where porridge is eaten often, can be healthy while still eating diets generally pretty high in cholesterol. Then again, scotch whisky (nectar of the Gods) also probably has wonderful health benefits with regard to cholesterol!
Whatever you're doing is wonderful, though -- to lose 100 pounds and keep it off is very admirable! Kudos to you!!!