Dopamine

Dopamine is a brain messenger that drives you toward things. It rises when something might be coming, and it rises most when you can't be sure. Once you have the thing, it settles. Evidence: solid That's why the pull is strongest the second before you open the message, not after. Evidence: decent

The popular version, "dopamine hit", "dopamine detox", "burned-out receptors", is mostly wrong. Dopamine isn't a tank that runs dry from scrolling, and there's no evidence a weekend without a phone resets anything. What a break does is show you what the habit was standing in for. Evidence: decent

You'll also read that love lights up the brain like cocaine. The real data: seventeen people intensely in love, a few months in, were scanned looking at a photo of the person, then at a photo of an acquaintance. The partner's photo lit up reward areas rich in dopamine, the ones that drive wanting. Evidence: decent Nobody on cocaine was scanned. The researchers made the link themselves, by pointing to an older study in which cocaine lit up one of the same areas. Same region, different study, different people. Whether love works like a drug was never tested head to head. Evidence: worth trying