You don’t have to worry about having too much cholesterol when you have an egg a day. And eating an egg at breakfast has many benefits. Many elderly people are harsh on their daily diet and eggs are not easily eaten, which is actually a very serious mistake. Consuming egg yolks can help the elderly prevent coronary heart disease and also has the effect of assisting in lowering blood lipids. Scientists have found in recent years that egg yolks are rich in lecithin, in addition to cholesterol. Lecithin is a strong emulsifier that makes cholesterol and fat particles smaller and stays in suspension, which facilitates the passage of lipids through the walls of blood vessels and is used by tissues, thus reducing cholesterol in the blood. American nutritionists extracted lecithin from eggs and let patients with cardiovascular disease eat it every day, and after 3 months, the patients’ serum cholesterol levels dropped significantly; it was also used to treat atherosclerosis and received unexpected results. This suggests that lecithin in eggs has a therapeutic effect on high cholesterol. When cholesterol is combined with protein, it forms a “lipoprotein”. These “lipoproteins” are divided into very low density lipoproteins, low density lipoproteins and high density lipoproteins according to their particle size, the first two of which are deposited on the walls of blood vessels, while the latter have the effect of removing cholesterol from the walls of blood vessels. In this way, the components in eggs can restrain each other and cancel each other out. The nutritional contribution of eggs to the human body can be said to be “more meritorious than demeritorious”. The reasons for high blood cholesterol in patients with atherosclerosis are many and varied, mainly related to an imbalanced diet and lack of certain nutrients, but not due to eating egg yolk. Moreover, not eating cholesterol-containing foods for a long time can also cause nutritional deficiencies. In addition, the lecithin in eggs, after digestion and absorption by the body, can also release acetylcholine. Acetylcholine is a chemical that transmits information in nerve cells, and the more it is in the brain, the better it is for improving memory and avoiding memory loss that is common in people over 60 years old. At the same time, it has a role in maintaining and enhancing memory for people of all ages. Although it is said above that eating eggs is beneficial to the health of the elderly, but too much is not enough, it must be in moderation, according to their own digestive function to choose the amount, the elderly to eat 1 egg per day is appropriate.