What are the effects of low high density lipoprotein in human body function?

Arteriosclerosis: Hdl is a transport lipoprotein that removes excess cholesterol from the intima (the inner lining) of arteries. Low levels impair this important cleansing function.

RemoveFats fromCells: The HDL particles transport fat molecules, all fat molecules, including the fat molecule cholesterol. If white blood cells within the walls of arteries become fat overloaded (called foam cells) from eating/removing LDL particles within the walls of arteries, they die in place. Accumulations of living & dead wbcs in the walls of arteries is called plaque. Thus LDL vs. Hdl are a balancing functions.

No real impact: If otherwise genetically normal, no real clinical issues.

Increased Artery Ds: The beta lipoproteins distribute fat molecules around the body in the water outside cells. The smallest, ldl, are the particles which primarily drive arterial disease if not at very low concentrations. The Alpha lipoproteins are the key organizing proteins of the HDL particles, which can pick up and remove excess fat from cells that are fat overloaded. Thus LDL vs. Hdl are a balancing functions.