Many of us are aware that the bacteria in our gut can influence our health, but new research shows that these bacteria carry viruses, which often influence the bacteria, and, perhaps, our mental health, explains Psychobiotic
, at least in the gut. Outside of the gut, it is a potent pathogen, so a virus that limits its population may be a good thing. With conditionally pathogenic bacteria, as with real estate, it’s all about location, location, location.into a host bacterium. Phages are marvels of minimalism, unable to even replicate their own chromosomes.
The beauty of a phage attack is that one dose is sufficient: the phages multiply on their own and hunt down their hosts with a vengeance until they are wiped out. There is no equivalent of antibiotic resistance with phages, which seem to act upon all or none. They are very specific about who they select to host their invasion. Other bacteria are left alone—another big difference from antibiotics, which are often broad-brush medications that kill the good with the bad.
Viruses do the same to our own cells, and scientists have discovered that almost 10 percent of our “human” genes are from viruses that insinuated themselves into our germline and stayed there. In fact, the placenta appears to be an ancient gift from a virus that changed the biology of mammals forever.
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