Neuroscientists looking at meth-addicted rats found that higher levels of oxytocin, the much-studied hormone associated with social behavior and stress, decreases their demand for the drug, an article in Biological Psychiatry reports. They found that the effects are changed by actions in the part of the brain associated with aversion, motivation and rewards.

This study echoes findings in a 2014 report by some of the same researchers, which found that oxytocin decreases cocaine usage in addicted rats.