Why do we kiss?

Welcome to What’s Up Docs?, the podcast where doctors and identical twins Chris and Xand van Tulleken try to get to the bottom of the ideas shaping our health and wellbeing.

In this Valentine’s Day-themed episode, they turn their attention to kissing. Why do humans kiss, how did it evolve, and does it offer any biological advantage? They also explore the meaning behind different types of kisses and whether kissing is truly universal among humans – and what it means if it isn’t.

To help them untangle the science behind one of our most intimate behaviours, they’re joined by Evolutionary Biologist, Dr Matilda Brindle.

If you want to get in touch, you can email us at whatsupdocs@bbc.co.uk or WhatsApp us on 08000 665 123.

Presenters: Drs Chris and Xand van Tulleken

Guest: Dr Matilda Brindle

Producer: Maia Miller-Lewis

Executive Producer: Rami Tzabar

Editor: Jo Rowntree

Researcher: Grace Revill

Tech Lead: Reuben Huxtable

Social Media: Leon Gower

Digital Lead: Richard Berry

Composer: Phoebe McFarlane

Sound Design: Ruth Rainey

At the BBC:

Assistant Commissioner: Greg Smith

Commissioning Editor: Rhian Roberts

A Loftus Media production for BBC Radio 4