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

Here’s a comforting thought: you might not actually be alone in your own body right now. Parasites are far more common than most people realize, and they don’t care about your personal boundaries, ...

Entamoeba histolytica infects nearly 50 million people each year and kills around 70,000. It’s a shape-shifting parasite that invades the human gut, often causing mild symptoms like diarrhea. But in ...