Cholesterol is a waxy substance produced by the body and is also obtained from the diet. A high cholesterol level in the body is commonly known as Hyperlipidemia. It is a common problem where there accumulation of extra fats in the blood. Hyperlipidemia is one of the major risk factor for cardiovascular diseases. Cholesterol and triglycerides together obstruct the blood flow by narrowing the Blood vessels. This review primarily focuses on the Causes, Types, Diagnosis, Symptoms and Treatment of Hyperlipidemia. It may be treated by modifying the life style, eating healthy food, reducing weight if obese, doing exercise on a regular basis but several medications are also available in the market.