A microscopic parasite called Blastocystis can reside in your digestive tract. Researchers are trying to determine if Blastocystis causes any diseases. Some people with gastrointestinal problems such as diarrhea and abdominal pain have Blastocystis in their stool. However, Blastocystis usually exists in a person’s digestive tract without causing any harm.
Blastocystis can be transmitted through food, water, or contact with feces from humans or animals. It is more common in developing countries and among those who work with animals.
Previously, Blastocystis in humans was identified as a single species, Blastocystis hominis. Researchers have since discovered various variations, including different species or strains within a species. The current scientific name for Blastocystis is Blastocystis spp, which means “multiple species.” Blastocystosis is the term used to describe a Blastocystis infection.