We spend many billions of euros each year on maintaining our health, yet we regularly fall ill. Doctor and nutrition specialist Dr. Joel Fuhrman has discovered an astonishingly simple way for everyone to fortify their immune system and largely prevent infections: we just need to change our diet. The excessive consumption of industrially processed foods, sweeteners, animal fats, and proteins harms our bodies. At the same time, we eat too little fruit, legumes, nuts, and vegetables—foods rich in various nutrients and vital substances that strengthen and protect our bodies. In this authoritative and revolutionary guide, Dr. Fuhrman demonstrates, based on the latest scientific research, how to properly select, combine, and prepare foods to build the immune system.