Enzymes are proteins that speed up processes in the body. Your pancreas makes the LpL enzyme. Normal LpL breaks down chylomicrons in your bloodstream so your body can use them for energy.

Q. I understand that exercise raises the level of HDL in the blood. Can you explain how this happens? I haven’t been able to find the answer anywhere. — Estero, Fla. A. First, here are … ...