Study: Running Electric Current Through Your Brain Might Not Actually Make You Smarter

This is probably going to come as a shock to you, so you might want to sit down, but — here goes — it turns out hooking your head up to a do-it-yourself brain-electrocuting machine that came from a kit and zapping your mind with electric current could actually make you dumber? Which is a particular problem if you are the kind of person who is hooking your head up to a do-it-yourself brain-electrocuting machine that came from a kit and zapping your mind with electric current, since you surely do not have a lot of IQ points going spare.