Back in the 1980s, the so-called “serotonin hypothesis” became part of pop science. The theory was simple: low serotonin, bad; high serotonin, good. Then, with the advent of the internet, serotonin discourse spiked. Memes gave us serotonin, apparently. Sunshine? That gave us it, too. Sure, doing MDMA would deplete it, but dropping 5-HTP supplements would sort us out. Go stroke a cat! Pop some pills! Eat more bananas! Serotoninhellip;

read more raquo;