We have witnessed a considerable number of epidemics and pandemics in the 21st century, despite having at our disposal greater scientific knowledge, more medical tools for diagnosis and treatment, and more accessible basic sanitation. The fact is that our immune system is failing to act due to the stress of modern life and malnutrition based on processed/ultra-processed foods without vital energy. What if we were able to leverage the most wonderful tool that nature has given us and that makes life possible: the immune system? This work summarizes decades of research on the relationship between immunity and nutrition and presents the endless potential of treatments based on integrative medicine, giving readers tools to enhance the immune system only with nutrition habits and lifestyle. Unique formulas developed by the author based on vitamins, minerals, fibers and probiotics available in foods and supplements are presented in this book, along with their associated benefits and implications for immunity and overall health.The purpose of this work is to serve as a source of information and research showing another view on the origin of diseases, which are often omitted or neglected in orthodox prevention and treatment.