No man is an island. If anything, every man is a sentient, mobile farm for the countless quadrillions of bacteria that colonize us. And by introducing the right bacteria into that equation, you can give your body one heck of a boost.
Every person on this planet could reasonably be considered a superorganism given that the number of microbes attached to us outnumber our own cell count 10 to 1, and routinely mix their genomes with our own. Each of us is a unique ecosystem with a unique blend of microbes coating their skin, mucus membranes, and gastrointestinal tracts.
Your gut alone hosts more than 100 trillion individuals from more than 500 species (half the body's total). Most of those actively work for your mutual benefit by keeping pathogens in check, helping break down food, and augmenting nutrient absorption, host cell development, and immune system function. You know, stuff that keeps you alive.
Click "source" to read more.