Which vitamin is known to help lower cholesterol levels?

Niacin, also known as Vitamin B3, is recognized for its ability to help lower cholesterol levels in the body. It functions by reducing the amount of low-density lipoprotein (LDL) cholesterol, often referred to as "bad" cholesterol, while simultaneously increasing high-density lipoprotein (HDL) cholesterol, known as "good" cholesterol. This dual action on cholesterol levels can contribute to a lower risk of cardiovascular diseases.

Niacin facilitates this process by inhibiting the hepatic production of LDL cholesterol and promoting its clearance from the bloodstream. Additionally, it helps improve lipid profiles, making it a valuable component in managing cholesterol for individuals at risk of heart disease.

While the other vitamins listed play essential roles in various bodily functions, they do not have significant effects on cholesterol levels. Vitamin B12 is vital for nerve function and the production of red blood cells, Vitamin A is important for vision and immune function, and Vitamin K plays a crucial role in blood clotting. None of these directly affect cholesterol metabolism in the way Niacin does.