Is soy milk a protein?

Jul 28, 2024 Source: Cainiu Health
Disease description:

My mother has suffered from rheumatism for many years. Today she went to the hospital for a checkup, and the doctor advised her to eat more soy products. May I ask, is soybean milk a protein?

Doctor's answer (1)
Dr. Shen Yonghua

Soy milk is not purely protein, but it is a source of high-quality protein. It is a beverage made from soybeans through processes such as soaking, grinding, and boiling. Soy milk contains abundant plant-based protein, but besides protein, it also contains various other nutrients such as carbohydrates, fats, vitamins, and minerals.

During the production of soy milk, soybeans undergo soaking, grinding, and cooking, through which most of the protein content is preserved. The protein in soy milk is not only abundant but also has a relatively complete amino acid profile, closely meeting the body's needs, thus offering high nutritional value. Its protein content is approximately 2% to 3%, comparable to that of cow's milk, making it an excellent source of plant-based protein, especially suitable for individuals who are lactose intolerant or follow a vegetarian diet. This is particularly beneficial for populations needing increased protein intake, such as children, pregnant women, the elderly, and athletes. Additionally, soy milk contains active substances such as soy isoflavones, which may offer certain benefits in preventing cardiovascular diseases and osteoporosis.