Cholesterol meaning: Cholesterol is a waxy substance throughout

Cholesterol is a waxy substance throughout the body. It’s not “bad” unless you have too much of it. Your body needs it to build cells and make vitamins and other hormones. But too much cholesterol can pose a problem. Cholesterol comes from two sources. Your liver makes all the cholesterol you need. Understand about cell membranes, cholesterol testing, normal levels by age, and causes of high cholesterol. Cholesterol is a type of lipid that your body needs to function. Learn what it does and why you don’t want too much of it in your blood. 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 is an essential structural and signaling component of animal cell membranes. In vertebrates, hepatic cells typically produce the greatest amounts. In the brain, astrocytes produce cholesterol and transport it to neurons. [6] It is absent among prokaryotes (bacteria and archaea ...