August 4, 2026

Doctors' Notes: Hydration

Drs Chris and Xand van Tulleken continue their conversation about hydration with Dr John Whittle, a consultant in anaesthesia, critical care and perioperative medicine at University College Hospitals and an honorary associate professor at University College London.Most of the time our bodies are brilliant at regulating fluid but what happens when that process gets disrupted by illness, stress or ageing? And crucially, what can we do about it?If you’d like to share your thoughts on this or any other topic covered on the podcast, you email us at whatsupdocs@bbc.co.uk. Presenters: Drs Chris and Xand van Tulleken Producer and researcher: Dr Samara Linton Executive Producers: Rami Tzabar Editor: Jo Rowntree Visual Producer: Leon Gower Technical Lead: Reuben Huxtable Digital Lead: Richard Berry Composer: Phoebe McFarlane Sound Design: Melvin RickarbyAt the BBC: Assistant Commissioner: Greg Smith Commissioning Editor: Rhian RobertsA Loftus Media production for BBC Radio 4.

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