New Delhi, March 7 -- Cholesterol, the fatty, waxy substance found in the blood, is often blamed for heart problems. The truth is that it is required to maintain healthy cells, create hormones, and aid digestion. It's the liver that produces cholesterol naturally. It may also be obtained from animal-derived foods such as meat, dairy products and eggs. Although the waxy substance is necessary for the body, excessive amounts can be bad news for your health. Elevated cholesterol levels may shoot up the chance of developing heart disease and stroke. If you were diagnosed with high cholesterol, you would probably eliminate certain foods from your diet. The list may include dairy products, including milk. But does milk increase cholesterol or i...