Dopamine, explained without the nonsense

Dopamine isn't the 'pleasure chemical' — it's closer to a wanting signal. It tells you something is worth pursuing, then updates based on whether the reward matched the promise.

Nicotine hijacks that loop. It triggers a fast dopamine release, then your brain compensates by reducing baseline sensitivity. Within weeks, you need the vape to feel normal rather than to feel good.

That's why the first vape of the day feels like relief and the tenth feels like nothing. You're not chasing a high, you're topping up a deficit.

The good news is the loop unwinds. Receptor density and sensitivity start recovering within weeks of stopping. The flat, restless feeling in week one is repair, not damage.