To test the association between hookworms and food allergies, Dr. James Logan infected himself with the intestinal parasites and swallowed a pill camera to film the action in his gut.
Tropical disease expert Dr. Logan and his team at the London School of Hygiene and Tropical Medicine (LSHTM) study how to control insects that transmit deadly diseases like malaria. The self-experiment was for a segment on the TV show Embarrassing Bodies, which debuted in the U.K. in March.
Hookworms are passed through feces and people can acquire them by walking barefoot on contaminated soil — like at the beach. Previous research has suggested that hookworms can alleviate and even cure symptoms of food allergies, which intrigued Logan who suffers from a food allergy that prevents him from eating bread without becoming ill.