Bacteriocins: Key to surviving the age of antibiotics?

Normally, you should have numerous species of microbes inhabiting your gastrointestinal tract and other body locations that produce bacteriocins, i.e., natural antibiotics that keep unhealthy microbial species from taking over. Unfortunately, modern antibiotics, while necessary at times, have killed off species that were previously protecting you by producing bacteriocins. This allows the emergence of health problems mostly unique to modern people including weight gain, type 2 diabetes, irrit...