Researchers have discovered that gut bacteria produce a molecule that not only induces but also causes atherosclerosis, the accumulation of fat and cholesterol in the arteries that can lead to heart attacks and strokes. This unexpected link between microbes and cardiovascular disease — the leading cause of death in humanity — is a paradigm shift. The work was published Wednesday in the journal Nature, a showcase for the world’s best science. #Brain Journey Network english.elpais.com/health..