
Alexander 'Dr Xand' van Tulleken is a British doctor and TV presenter. Along with his identical twin brother, Christoffer 'Dr Chris' van Tulleken, they are best known for presenting the children's TV series "Operation Ouch!" and have hosted a range of programmes on issues such as diet, binge drinking and health.

The Great Fog of 1952

The Human Body: Secrets of Your Life Revealed

Dying For Help

Horrible Histories

Would I Lie to You?

Horizon

8 Out of 10 Cats

The Great Plague

Who Do You Think You Are?

Operation Ouch!

Richard Osman's House of Games

The Great Smog: Winter of '52

The Great Stink of 1858

The Weakest Link

The Hit List

Expedition Volcano

The Last Leg

Michael McIntyre's The Wheel

Question Time

Morning Live

The Vikings

Celebrity Antiques Road Trip

How to Lose Weight Well

The One Show

Sunday with Laura Kuenssberg

Surviving the Virus: My Brother & Me

The Gunpowder Plot: Countdown to Treason

The Truth About Carbs

Dr Xand's Con or Cure

Tsunami

The Twinstitute

HealthCheck UK Live