Immune Health

byDaniel M Davis, Daniel M Davis (Read by)

A Myth-busting Guide

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We are surrounded by bold claims and quick fixes for improving our immune systems. In this expert guide, leading immunologist Daniel M. Davis sorts the fact from fiction.

Is it true that orange juice can help ward off colds?
How does age affect our immune system?
Is mental health really connected to inflammation?

How do we separate the bogus claims from the useful advice? And given its sheer complexity, is there anything we can do to improve our immune system?

World-renowned immunologist Daniel M. Davis examines the effects of stress, diet, age, exercise, the microbiome and more on the immune system, punctures the key myths, and equips us to make informed choices for ourselves.

'Brilliant. Will change the way you think about your body and live your life' CHRIS VAN TULLEKEN

'A world expert offers practical tips and dispels many myths' TIM SPECTOR

'Illuminating ... fascinating' DAILY MAIL ** BEST BOOKS OF THE YEAR 2025 **

Previously published as Self Defence

© Daniel M Davis 2026 (P) Penguin Audio 2026

About Daniel M Davis

Daniel M. Davis is Head of Life Sciences and Professor of Immunology at Imperial College London. His previous books include The Beautiful Cure, which was shortlisted for the Royal Society Science Book Prize 2018 and described by Henry Marsh as ‘one of the best accounts I have yet come across of the nature of biological science and discovery’; The Secret Body: How the New Science of the Human Body Is Changing the Way We Live; The Compatibility Gene, which was longlisted for the Royal Society Science Book Prize and shortlisted for the Society of Biology book prize; and Self Defence: A Myth-Busting Guide to Immune Health, which was a Book of the Year in the Daily Mail. Davis has published over 150 research papers and is a Fellow of the Academy of Medical Sciences. In 2025, he was awarded an MBE for services to science communication.

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