Meet the brain molecule of the moment: 4-(2-Aminoethyl)benzene-1,2-diol. You have been its beneficiary from birth. Lately, you might have seen it splashed across the headlines under its common name.

Detoxes are a staple of modern-day wellness culture. Want a healthier gut? Detox your diet. Less anxiety? Do a digital detox. Now, though, another type of detox involving a common hormone, dopamine, ...