The cholesterol content in milk and dairy products is not high. The cholesterol content in every 100 grams of milk is 13 mg, only 11% of the cholesterol content in chicken, 17% of lean pork, 20% of mutton, 21% of beef, and 38% of goat milk.
Milk contains whey acid, which can inhibit cholesterol.
Cholesterol in human blood comes from the intake of food and the synthesis of their own liver. Even without intake of cholesterol in food, the cholesterol in blood may still be high.
Cholesterol synthesis by the liver is a complex enzymatic reaction process. Whey acid in milk can inhibit this reaction process, thus blocking cholesterol synthesis and reducing the cholesterol content in the blood.