Is Soy Bad For IBS? (Expert Answer)

Short Answer: Soy is good for IBS because it has genistein and daidzein that have weak estrogenic or anti-estrogenic effects on the body. Because they can reduce inflammation in the intestines and improve intestinal motility.

IBS is a condition that affects your digestive system.

In IBS, your body experiences cramping, abdominal pain, bloating, gas, and diarrhea or constipation, or both.

This can lead to various health problems, such as poor quality of life, mood disorders, and complications.

One of the key factors in managing IBS is diet.

What you consume can affect your bowel movements, which can impact your IBS symptoms and overall health.

To effectively manage IBS, you should consume soy-rich foods like tofu and soy milk and avoid soy-rich foods like soy sauce and processed meat.

Now, soy is a legume that is widely grown for its edible bean.

People usually eat soy as a plant protein source because it has all the amino acids that act as the building blocks of protein.

Soy is good for IBS because it contains genistein and daidzein, two types of plant estrogens (phytoestrogens) that have weak estrogenic or anti-estrogenic effects on the body.

These effects may help reduce inflammation in the intestines and improve intestinal motility.

(amount of soy you mentioned) can give you 25% of your daily needs of protein.

Genistein can positively affect IBS by modulating the activity of estrogen receptors in the gut.

Furthermore, soy is a complete protein and plant-based protein that is good for IBS because it contains all nine essential amino acids that your body cannot make on its own.

You can eat (amount or number) of tofu per day safely.

More than that can cause allergic reactions in some people.

You can eat (amount or number) of soy milk per day safely.

More than that can cause hormonal imbalances in some people.

That’s why I suggest you limit your intake of processed meat to no more than 100 grams per week to prevent colorectal cancer risk.

Stick to (amount or number) to minimize this risk.

Also, you shouldn’t eat (soy product) if you have thyroid problems or are taking thyroid medication to prevent hypothyroidism symptoms.

You can buy fresh tofu in your local market or order it from online.

Always choose organic tofu if possible.

You can store them in an airtight container in the refrigerator for up to 5 days.

You can buy soy milk online as well as offline.

To buy it online, there are many brands and marketplace to choose from.

But as a nutritionist I recommend Nature’s Way Organic Soy Milk from

Finally, remember, maintaining a healthy lifestyle, including a balanced diet, regular exercise, stress management and essential medical care is key to managing/dealing with IBS effectively.

I always recommend my patients with IBS to follow an anti-inflammatory diet to improve their overall well-being and enjoy a longer and healthier life.

About the Author

Abdur Rahman Choudhury

Abdur Rahman Choudhury is a nutrition coach with over 7 years of experience in the field of nutrition.

He holds a Bachelor's (B.Sc.) and Master's (M.Sc.) degree in Biochemistry from The University of Burdwan, India. He was also involved with a research project about genetic variations in the CYP11A gene among PCOS and Metabolic Syndrome patients.

He has completed the following online courses: Stanford Introduction to Food and Health by Stanford University (US) through Coursera, Certificate in Nutrition from Fabulous Body Inc. (US), Lose Weight and Keep It Off certificate course from Harvard Medical School (US), and Nutrition and Disease Prevention by Taipei Medical University (Taiwan) through FutureLearn.

Abdur currently lives in India and keeps fit by weight training and eating mainly home-cooked meals.

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