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Cholesterol is a substance produced by the liver and found in animal products that is essential for cell growth and hormone production. There are two main types of cholesterol - HDL and LDL. LDL cholesterol is good as it carries cholesterol away from the liver, while HDL cholesterol is bad as it does not allow for proper blood circulation. High cholesterol can collect in blood vessel walls and cause them to narrow over time, increasing the risk of heart attacks. Lifestyle factors like diet and exercise can help reduce cholesterol levels.









