The immune system is our most valuable resource, our first and most important line of defence, protecting us around the clock. It also determines how quickly we age, regulates our body weight and metabolism, and impacts our brain health. Yet modern life, with toxins, allergens, poor diet and imbalanced gut bacteria, places huge strain on it leading to a rise in immune issues and autoimmune conditions. But research shows that by removing these stressors and improving immunity through nutrition and lifestyle, we can transform long-term health. In The Immunity Plan , leading nutritionist Kate Llewellyn-Waters unpacks the most robust science behind our immune system, from the role of hormones and the microbiome to the ways immunity differs between men and women. With practical advice, lifestyle strategies, and immunity-supporting recipes, this essential guide shows you how to strengthen your immune health, reduce inflammation, and protect against autoimmune disease. This is the essential, accessible handbook for anyone who wants to understand their immune system and harness its power for a healthier life.