Elderly people can take protein powder in moderation. Protein powder is a combination of amino acid-rich proteins from raw materials such as soybeans, milk, and peas using a purification process, and is designed to replenish proteins for the human body. Protein powder contains more than 20 kinds of amino acids, including eight essential amino acids needed by adults and nine essential amino acids needed by children, which is more nutritious. However, due to the high nutrient density of protein powder, digestion and absorption of protein powder will bring some burden to the digestive system. Elderly people who consume it are advised to take it in small amounts and many times, so as not to take too much at one time, which may trigger indigestion and lead to nausea, vomiting, abdominal pain, bloating and other problems. Healthy older people do not need to supplement protein powder on purpose, but if for some reasons, such as recovering from a serious illness, having protein malnutrition, etc., when additional supplementation is necessary, it can be consumed appropriately. At the same time, it is necessary to pay attention to the consumption of allergic reactions, if the soy, milk or peas and other components of the elderly allergy, it is not recommended to consume protein powder. Liver and kidney insufficiency of the elderly need to consume protein powder under the guidance of a doctor.