Eating four salted duck egg yolks a day is definitely out of the standard. You eat too much. Although egg yolk has high nutritional value and is beneficial to health, it also contains a lot of cholesterol. If this element gathers in the body and cannot be discharged, it will do harm to the body. In addition, there is too much yellow salt in salted duck eggs, which will raise blood pressure and be harmful to health. Therefore, we must eat less in the future, one every day and at most two.