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

"It is advised to take certain food safety precautions." Officials sound alarm after detecting parasite in region for first ...

It infects nearly one-third of the global population, yet its microscopic size makes the parasite difficult for scientists to study. That parasite is Toxoplasma gondii, a widespread organism that ...

This article is part of an occasional series in which Nature profiles scientists with unusual career histories or outside interests. Kevin Liévano-Romero was seven years old when he pooped out his ...