Thanks for the links, but I was hoping for a source similar to the type I gave in comment# 16, i.e. an abstract or article from the professional literature.
I found the following very interesting .... vitamin C!!
"The continual recycling of cholesterol happens naturally when you have sufficient ascorbate, another name for vitamin C. Excess cholesterol is naturally converted to bile acid and then excreted. But if you don't consume enough vitamin C (about 2000-3000 milligrams per day for an adult), cholesterol builds up in your bloodstream. It is here that doctors make a critical error: instead of telling you to take more vitamin C to recycle cholesterol naturally, they prescribe Lipitor, which may create a deficiency of new cholesterol".