High blood cholesterol is a condition in which your blood has a lot of cholesterol: a waxy, fat-like substance. The higher your blood cholesterol level, the more note worthy is your danger of coronary illness (CHD) and heart assault. Overviews have demonstrated that serum complete cholesterol levels are constantly connected with ischemic coronary illness chance more than a wide scope of cholesterol qualities. This relationship has been seen in numerous populaces all through the world. The relationship between cholesterol levels and IHD Risk is consistent, and it is not straight. at any level of cholesterol, for a given milligram/ deci liter change in the cholesterol level, the adjustment in relative danger is the same as at some other cholesterol level .Heart Protection Study results propose that diminishing serum cholesterol from any benchmark level further brings down danger in high-hazard patients. In Heart Protection Study, total danger diminishments for major vascular occasions were littler at lower cholesterol levels on the grounds that the danger conferred by higher cholesterol itself was inadequate. In a study 404 patients were considered. Contingent upon the cholesterol level and fat admission the patients were partitioned into 4 gatherings. There were 176(45.5%) patients in Group I, 76(18.2%) patients in Group II, 113(27.9%) patients in Group III and 39(9.6%) patients in Group IV.