British physician and television personality who is best known for hosting Supersize vs. Superskinny.
He studied at University College, London, and went on to attend the London School of Hygiene & Tropical Medicine.
He worked for a time in Uganda and Kenya, studying malaria and HIV.
He was born to parents Lee and Peter Jessen. He's openly gay; he's had a long-term relationship with Rogerio Barreto.
He and fellow physician, Pixie McKenna, co-hosted the popular television program, Embarrassing Bodies.