Taking low-dose aspirin to protect against breast cancer, sunscreen contributing to vitamin D deficiency, and testosterone shown to produce overconfidence.
Scientists are learning that the bacteria living inside us, most notably in the intestines, influence our bodies far more than previously suspected. Our microbiome influences many other organs, particularly the liver, brain, and immune system. Different mixes of these bacteria may account for a great deal of the variability among people, particularly in our …