Will I end up with diarrhea after eating soy products?

Soy products are commonly used nowadays as substitutes for dairy and are becoming very popular. Nevertheless, in some individuals, soy products can cause diarrhea and other digestive symptoms. Once an individual develops diarrhea right after eating soy products, he/she is likely to have an allergy or intolerance to soy. When it comes to intolerance, it is usually confused with an allergy since both have similar symptoms. If the individual experiences diarrhea every time soy products are eaten, they must be eliminated from the diet until a doctor can be consulted.


Generally, an episode of diarrhea usually lasts for a few days up to two weeks. Remember that diarrhea is normal and typically triggered by a viral infection, traveler’s diarrhea or food poisoning. When diarrhea occurs from soy intolerance or allergy, it should not last for more than a day. Once the soy is eliminated from the digestive tract, the symptoms must subside. A doctor must be consulted if diarrhea lasts for more than a day.

Soy products

The usual soy allergy symptoms include nasal congestion, hives, skin rashes, eczema, difficulty breathing as well as coughing, wheezing and runny nose.


It is important to note that soy is derived from soybeans which are considered as legumes. The soybeans are included in the same family as peanuts, lentils and most types of beans. If an individual has an allergy to other legumes, he/she faces a higher risk for being allergic to soy. Soy allergy is different from intolerance since it involves the immune system which starts to malfunction and attacks the soy proteins, resulting to a chemical chain-reaction all over the body. It is best to enroll in a course on first aid today so that you are prepared to manage an allergic reaction.


Intolerance is considered as a common issue. If an individual has soy intolerance, the intestines fail to generate the appropriate enzymes to properly digest the sugars or proteins present in soy. This will cause the intestines to become inflamed, irritated or swollen. Take note that the body will try to eliminate the soy as fast as possible. The individual will experience nausea, vomiting or diarrhea within 20 minutes after the ingestion of soy products.


In case the diarrhea is accompanied by other symptoms, it is an indication that it is an allergic reaction. The usual soy allergy symptoms include nasal congestion, hives, skin rashes, eczema, difficulty breathing as well as coughing, wheezing and runny nose. When it comes to a severe allergic reaction, it can be life-threatening. Once the individual develops swelling in the face or throat, hives and dizziness, call for emergency assistance right away.


If the consumption of soy products causes diarrhea, the ideal treatment is to stop and avoid eating soy products. Minor cases of the allergy symptoms can be managed with antihistamines and steroid-based creams. Take note that soy intolerance can be managed with prescription medications but is usually treated with the elimination diet. The individual can substitute various soy products with potato-based or rice products.


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