Junk Food Rats Refuse Healthful Food

If you think a junk food diet can’t mess you up in a deep, cellular way, this study done on rats may convince you otherwise. A researcher fed a group of rats the most disgusting junk food diet he could think of. It apparently so messed up their brain’s pleasure centers that the rats became unwilling to switch back to healthful food. In fact, when presented only with nutritious food, the animals outright chose to starve themselves. (Thanks, Matt.) Link.