Salt caves are located in northwestern Iran, near the villages of Hamzehli, Mehrabad and Chehrabad, Zanjan province.
Ancient Romans contributed to the risk of parasites such as worms, and lice increased significantly.
It is a nightmare to know that our bodies are home to helminths. They still grow up in our stomachs and intestines without being digested like food.
While trying to cure diseases that have been for centuries, scientists are also interested in a big question that has not been answered yet: Where does human illness come from?
The parasite, it sounds really scary, but up to 10 of us are nurturing them somewhere on the body.