Cholesterol is necessary to produce hormones, build cell membranes, produce vitamin D and bile acids that help you digest fat. Cholesterol is very necessary for proper neurological function and for your nervous system to complete many of the activities necessary for your body to function at its optimal level. Estrogen, testosterone, and cortisone are produced by cholesterol as are all the steroid hormones.
UVb rays from the sun interact with cholesterol on your skin to make vitamin D. If your cholesterol levels are too low, then the body doesn't have the ability to make vitamin D. Vitamin D actually is more hormone-like than vitamin-like, and is important for many bodily processes, including calcium regulation, a healthy immune system, etc.
Your total cholesterol consists of LDL (low-density lipoprotein), HDL (high-density lipoprotein), triglycerides, and lipoprotein. A true indicator of heart-disease risk is not the HDL to LDL ratio, which most people believe, but actually, your triglyceride levels. Triglycerides are a dangerous fat and are increased by consuming grains and sugars.
The accepted medical model is that triglycerides should be 150 or below. However, this number should ideally be below 90 or 100 for optimal health. There are many people with total cholesterol below 200 and have high triglycerides, and are actually much more unhealthy than someone with medically diagnosed high cholesterol, above 200 total but who have triglycerides 100 or below.
The body is an amazing organism constantly trying to achieve balance. 75 percent of cholesterol is produced in your liver. The liver produces more cholesterol when it is called on to do so by the body. Since, cholesterol is necessary to help heal and build cells, when there is too much inflammation in the body this is when the liver produces more cholesterol. So you can see that abnormally high-cholesterol levels can be the result of too much inflammation in the body. It's not the cholesterol that's the problem it's the inflammation. If you get to the root of why there is inflammation in the body, cholesterol levels will naturally balance.