3 Parasites That Could Be Living Inside Your Body Right Now — A Biologist Explains

A biologist explains three common human parasites: Toxoplasma, Demodex mites, and helminths, and how they live in or on people.

Toxoplasma can persist as dormant cysts after infection, while Demodex folliculorum lives in the hair follicles of most adults.

Parasitic worms can also inhabit the body without obvious symptoms, making carriage different from active disease.

The piece highlights when these infections matter medically, especially in pregnancy, immune compromise, and other high-risk settings.