Cholesterol Can Be Silent

High cholesterol usually has no signs or symptoms, so a blood test is important for measuring levels.

Why Your Body Needs It

Cholesterol helps make hormones, vitamin D, and substances that aid digestion; the body makes all it needs.

When Blood Cholesterol Builds Up

Excess cholesterol can combine with other substances to form plaque, which may narrow or block coronary arteries.

LDL, HDL, And VLDL

LDL and VLDL contribute to plaque buildup; HDL carries cholesterol back to the liver for removal.

Lifestyle Factors Matter

Saturated fat can raise LDL; little physical activity and smoking can lower HDL, while smoking also raises LDL.

When Testing Begins

MedlinePlus recommends first testing between ages 9 and 11, with later timing depending on age and individual risk factors.

Managing Cholesterol

Heart-healthy eating, weight management, and regular physical activity can help lower cholesterol; medicines may also be needed.