Operation Ouch

The doctors demonstrate how genes make a person, a new doctor joins the team and more.

The doctors demonstrate how strong a human skeleton is, Simone Ming shows her strong body and more.

The doctors find out why people are squeamish and tackle medical mysteries on the ward.

Dr Xand investigates how blood clots, and Dr Ronx finds out how echolocation helps people.

Twins doctors Chris and Xand van Tulleken explore their way through medicine and biology.

Twins doctors Chris and Xand van Tulleken explore their way through medicine and biology.

The doctors face off in a thumb challenge and learn how drones are assisting emergency rescue teams.

Twins doctors Chris and Xand van Tulleken explore their way through medicine and biology.

Twins doctors Chris and Xand van Tulleken explore their way through medicine and biology.

Twins doctors Chris and Xand van Tulleken explore their way through medicine and biology.

Twins doctors Chris and Xand van Tulleken explore their way through medicine and biology.

Twins doctors Chris and Xand van Tulleken explore their way through medicine and biology.

The doctors take a journey around the human body - looking at it from head to toe.

Dr Chris and Dr Xand reveal the winners of the first-ever Ouch Awards.

The doctors, with the help of YouTubers, share tips for problems that arise in people's lives.