You may have heard that overuse of antibiotics has created dangerous “superbugs” that no antibiotic drug can tame or about people losing hands, feet, legs and arms to these “flesh-eating” superbugs. Could you get attacked by one? It’s possible. But maintaining a strong immune system can keep you safe from harm. In 1947, just four years after penicillin was mass marketed, a common bacterium, found on the mucus membranes and skin of about 1/3 of the population, called Staphylococcus aureus (S. aureus) was found to be resistant to it. That is, someone got a staph infection, and a health practitioner gave them penicillin expecting it to make short work of the critter . . . but it didn’t. Oh-oh. Methicillin then became the antibiotic of choice. But an S. aureus was found to be resistant to methicillin in 1961. Oh-oh again. This time the resistant strains of S. aureus were called methicillin-resistant S. aureus, or MRSA. Vancomycin became the next antibiotic of choice; the first vancomyc…

Dr. Margaret Chan, director-general of the World Health Organization, has a grim prognosis for our future: “Antimicrobial resistance is on the rise . . . [As antibiotics lose their effectiveness a] post-antibiotic era means, in effect, an end to modern medicine as we know it. Things as common as strep throat or a child’s scratched knee could once again kill. Some sophisticated interventions, like hip replacements, organ transplants, cancer chemotherapy, and care of preterm infants, would become far more difficult or even too dangerous to undertake.”Well, we aren’t as gloomy about a post-antibiotic era. For all the good they’ve done, antibiotics as we’ve known them have done a whole lot of damage to almost everyone’s intestinal probiotic population, harming immunity and paving the way for all kinds of disease. We need different kinds of antibiotics that don’t indiscriminately kill good and helpful microbes along with the bad, and that the bad bugs won’t build resistance to. Fortunately,…