10 Red Flags for Poor Gut Health

4. Food Intolerance

Food intolerances occur when a person has difficulty digesting certain foods; they affect 20% of the world's population.

There are various causes, including depletion of healthy gut bacteria and intestinal barrier dysfunction, also known as leaky gut, which is a concept under much research these days. Experts believe a so-called leaky gut allows toxins, viral or bacterial invaders, and partially digested food to seep out through openings in the intestinal lining and into the surrounding tissues.