Cholesterol is a fatty substance that's mostly made by the body in the liver.
It's carried in the blood as:
- low-density lipoprotein (LDL)
- high-density lipoprotein (HDL)
Eating too much saturated fats in your diet can raise "bad" LDL cholesterol in your blood, which can increase the risk of heart disease and stroke.
"Good" HDL cholesterol has a positive effect by taking cholesterol from parts of the body where there's too much of it to the liver, where it's disposed of.