They've come up with a gross-sounding drink containing thousands of pig whipworm eggs, which they say can cut down pain and bleeding in the stomach.

Live worms can help treat diseases like colitis and Crohn's disease, known together as inflammatory bowel disease.

Experts think the gut was built to live with worms, and without them, it can overreact to infections.

Doctors think numbers of cases of colitis and Crohn's disease have risen in the last 50 years.

This might be because we have wiped worms and other parasites out from our stomachs and aren't used to dealing with infections.