Every100g of pig liver contains about 8,700 international units of vitamin A, and the daily requirement of adults is 2,200 international units. If you eat a lot of pig liver, you will be poisoned by too much vitamin A in your body and will not be excreted by your kidneys.
Poisoning can cause nausea, vomiting, headache, drowsiness and blurred vision. And it will lead to osteoporosis, rash, dry hair and other symptoms for a long time, and it will also do some damage to the liver.
Every100g of pig liver contains more than 400 mg of cholesterol, and a person should not take more than 300 mg of cholesterol from food every day. If the amount of cholesterol exceeds the normal consumption, it will lead to arteriosclerosis and aggravate cardiovascular diseases, especially patients with hypertension and coronary heart disease. So eat pork liver in moderation, not in excess.
Extended data:
Matters needing attention
Pig liver is the largest detoxification organ in pigs. All kinds of toxic metabolites and some toxic substances, such as pesticides, mixed in food will gather in the liver and be detoxified and excreted by it, or be transported to the kidney after chemical treatment and discharged from feces. The liver can also produce inflammation and even liver cancer. In addition, there may be diseases such as liver parasites.
If all kinds of toxic substances in the liver are not completely discharged, or the detoxification function declines, then toxic substances will remain in the blood of the liver, which may induce diseases such as cancer and leukemia.
Because the toxic blood in pig liver is scattered in tens of thousands of liver sinuses, it should be washed under tap water after buying pig liver, and then soaked in a basin for 1 ~ 2 hours to eliminate the residual blood.
Baidu encyclopedia-pork liver