"To age well your immune system is the key player you need to harness. Read this great book to understand how." -- Professor Tim Spector, nutrition expert at Zoe and author of Food for Life "A must-read for anyone looking to enhance their immune health and thrive at every stage of life." -- Dr Rupy Aujla, leading medical doctor and author of The Doctors Kitchen "I love the practical reminders and science-backed evidence of how we can better live by working with our immune system and helping it take care of us over the years ahead." -- Melissa Hemsley, real food cook, sustainability activist and author of Real Healthy "The immune system is the next frontier in terms of resilience, longevity and health span. This book is not only at the forefront of that movement, it also offers hope, whatever stage of life you are at." -- Dr Tara Swart, Neuroscientist, medical doctor and author "A wonderful book giving us a true insight into the complexities of our immunity throughout the lifespan." -- Rhiannon Lambert, leading UK nutritionist, founder of Rhitrition Clinic and author of The Science of Nutrition and The Science of Plant Based Nutrition "A must-read for anyone looking to optimise their immune health at every stage of life." -- Nichola Ludlam-Raine, Specialist Registered Dietitian and author of How Not to Eat Ultra-Processed "A revolutionary perspective on the role of our immune system across our lifespan. Through a blend of rigorous research and accessible storytelling, it challenges common misunderstandings about the immune system and also provides a truly comprehensive guide to lifelong wellness. A must-read." -- Dr Gemma Newman, GP and author of Get Well, Stay Well and The Plant Power Doctor Book "If I were to entrust anyone with strategies to improve and extend my life, it would be Jenna. Measured, persuasive, entertaining and most importantly, trusted. This book is proof science can be both enlightening and BEAUTIFULLY written." -- The Mac Twins, founders of The Gut Stuff "Jenna's ability to break down complex science into accessible, practical advice is what makes her the very best communicator on a topic as complicated as the immune system and health. She shares novel insights and easy to implement changes that can truly make the world of difference for our health and wellbeing." -- Dr Federica Amati, public health nutritionist and author of Every Body Should Know This "The immune health bible to healthy aging." -- Emily Leeming, dietitian, scientist and author of Genius Gut