Elevated bad cholesterol can lead to heart disease, often linked to lifestyle choices. However, a deficiency in Vitamin B3 (niacin) also plays a crucial role. Niacin lowers LDL cholesterol, raises HDL cholesterol, reduces triglycerides, and prevents arterial plaque buildup. Consume niacin-rich foods like chicken, turkey, tuna, mushrooms, brown rice, and peanuts to manage cholesterol levels.