Nutritionist and immunity expert Kate Llewellyn-Waters explains in simple terms how our immune system and gut work, how we can help improve our immunity every day, what autoimmune conditions and allergies are, and which are the key non-food contributors to gut health and immunity, such as sunlight, sleep, mental health and exercise. The main part of the book offers 100 everyday recipes, all using accessible, supermarket ingredients and offering helpful switches or additions to suit you and your family's needs.