Cholesterol is a type of lipid, or fat, that is produced naturally by the liver. It’s also found in certain foods, particularly animal products like meat, eggs, and dairy. Although it’s often thought of as something to avoid, cholesterol is essential for good health. It serves several critical functions in the body, including: Cell Membrane Integrity. Cholesterol is a structural component of every cell membrane, providing stability and flexibility. Hormone Production: It is a precursor to important hormones such as estrogen, testosterone, and cortisol. o Vitamin D Synthesis:  The body uses cholesterol to produce vitamin D when exposed to sunlight. Bile Acid Production: Cholesterol is also a key ingredient in the production of bile acids, which are necessary for the digestion and absorption of dietary fats. Despite its importance, too much cholesterol in the blood can contribute to the development of atherosclerosis, a condition where fatty deposits (plaques) build up in the walls of arteries, narrowing and hardening them. This can lead to heart attacks, strokes, and other cardiovascular problems.