What actually causes high cholesterol?

Travel into the digestive system to learn about cholesterol, and find out what the difference is between LDL and HDL cholesterol.

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In 1968, the American Heart Association made an announcement that would influence people’s diets for decades: they recommended that people avoid eating more than three eggs a week. Their reasoning was that the cholesterol packed into egg yolks could increase cardiovascular disease risk. So, what exactly is cholesterol? And is it actually bad for you?