Is it okay to drink soy milk on an empty stomach?

Mar 14, 2025 Source: Cainiu Health
Disease description:

My mother made soy milk in the morning. I haven't eaten anything from the time I got up until now. Is it okay to drink soy milk on an empty stomach?

Doctor's answer (1)
Dr. Shen Yonghua

It is generally acceptable to drink an appropriate amount of soy milk on an empty stomach. Soy milk contains various beneficial components such as plant protein, vitamins, and minerals. For healthy individuals, moderate consumption of soy milk on an empty stomach usually does not cause significant adverse effects. However, the protein in soy milk may be converted into energy and consumed on an empty stomach, thus reducing its nutritional value. Additionally, some individuals may experience gastrointestinal discomfort, such as bloating or diarrhea, after drinking soy milk on an empty stomach. This may be related to oligosaccharides in soy milk, which are fermented by intestinal bacteria, producing gas that can lead to bloating.

Drinking soy milk on an empty stomach is possible, but to avoid wasting nutrients and gastrointestinal discomfort, it is recommended to eat some carbohydrate-rich foods, such as bread or steamed buns, before consuming soy milk. This can help the body better absorb and utilize the protein in soy milk. Furthermore, individuals with weaker gastrointestinal function, such as the elderly, children, and those with a history of gastrointestinal diseases, should be cautious about drinking soy milk on an empty stomach to avoid placing additional strain on their digestive system. Also, soy milk should be consumed in moderation, as excessive intake may lead to excessive protein consumption and increase the burden on the kidneys.