
What Is Cholesterol? - American Heart Association
Mar 13, 2026 · Cholesterol is a waxy substance your body uses to build cells and to make hormones. Your body needs some cholesterol, but having too much in your blood increases the risk of heart …
High cholesterol - Symptoms and causes - Mayo Clinic
Mar 7, 2025 · Overview Cholesterol is a waxy substance found in the blood. The body needs cholesterol to build healthy cells. But high levels of cholesterol can raise the risk of heart disease. With high …
Cholesterol Levels: By Age, LDL, HDL, and More - Healthline
Apr 25, 2025 · We explain what healthy cholesterol levels are for adults and children. Also, learn about lifestyle changes and medications to help lower your cholesterol.
Cholesterol - Wikipedia
Cholesterol is the principal sterol of all animals, distributed in body tissues, especially the brain and spinal cord, and in animal fats and oils. [3][4] Cholesterol is biosynthesized by all animal cells [5] and …
Cholesterol: Understanding Levels & Numbers - Cleveland Clinic
Why are my cholesterol numbers important? Your cholesterol levels are important because they help you know your risk for heart disease. Cholesterol is a type of lipid (fat) that helps your body perform …
What is Cholesterol? Levels, Diet, and Treatments - Harvard Health
Apr 29, 2022 · What is "bad" about cholesterol isn't the substance itself - in fact, we can't live without it - but it's certain types of cholesterol and how much of them are in the bloodstream that matter. If you …
High cholesterol - NHS
Find out what cholesterol is, what causes high cholesterol, why it's important to keep your cholesterol levels under control, and how to lower your cholesterol.
About Cholesterol | Cholesterol | CDC
May 15, 2024 · The combination of high levels of triglycerides with either low HDL cholesterol or high LDL cholesterol levels can increase your risk for heart attack and stroke. Total cholesterol, the total …
Cholesterol: What causes high cholesterol? - Medical News Today
Jul 17, 2025 · High cholesterol is a risk factor for heart attacks and coronary heart disease. We look at the causes of high cholesterol and how to prevent it.
Cholesterol - MedlinePlus
Mar 18, 2025 · Your body needs some cholesterol, but too much can raise your risk of heart disease. Know the types (HDL and LDL), and how to lower high cholesterol.