In this book, the authors offer a different and truly revolutionary solution to finding the source of youth. While much has been written about the bacteria in the gut, exciting new research shows that there are millions of microbes inside our bodies - they support our brain, teeth, heart, lungs, bones, immune system and much more. There are germs from the air we breathe and from the things we touch throughout the day—cell phones and kitchen sponges, pets, doorknobs and even other people. These microbial life partners have a profound impact on our health and, groundbreaking research shows, may help prevent and reverse the most common age-related diseases.