The essential fatty acids which reduce serum cholesterol levels and minimise the risk of arteriosclerosis can be obtained from sunflower seed oil, corn oil or safflower oil. Several studies have indicated that garlic can reduce the cholesterol level in persons whose body normally cannot regulate the cholesterol fractions. Other important cholesterol lowering foods are alfalfa and yoghurt. Lecithin helps prevent fatty deposits in arteries. Best food sources are unrefined, raw, crude vegetable oils, seeds and grains.