Some people online believe many of us have dangerous parasites in our gut and need to flush them out with herbal supplements.

Parasites are far more common than most people realize, yet their symptoms are often subtle and easily misinterpreted as ordinary digestive issues, stress-related changes, or nutritional problems.

Some wellness influencers think many people have parasites and should use special supplements to flush them out. Is there science behind the claims?

Giardiasis is a long-term, intestinal protozoal infection caused by Giardia. It is seen worldwide in domestic and wild ...