Increased HDL levels decrease the risk of atherosclerosis. What is the mechanism of HDL anti-atherogenic action?

Answer options

1. They promote absorption of cholesterol in the intestine
2. They supply tissues with cholesterol
3. They are involved in the breakdown of cholesterol
4. They activate the conversion of cholesterol to bile acids
5. They remove cholesterol from tissues

Explanation

High-Density Lipoproteins (HDL) removes cholesterol from tissues so that they do not accumulate in these tissues, therefore preventing the process of atherosclerosis. This is why it is known as good cholesterol.