Why the scroll won't let go.

The ADHD reward system responds most strongly to novelty and immediate payoff — which is precisely what an infinite feed is engineered to deliver. A smartphone is a machine that supplies exactly that, endlessly. Infinite scroll, autoplay, and unpredictable notifications work like a slot machine, dispensing small hits of reward on a variable schedule — which is the most habit-forming pattern there is. So people with ADHD tend to be especially susceptible to compulsive scrolling, not because they're weak, but because their reward system is the perfect target.

One honest caveat: screens don't cause ADHD. The link is a correlation, and ADHD likely drives more screen use as much as the reverse. But heavy use can worsen focus and, by displacing sleep, make symptoms louder the next day.

Here's the quiet cost. When the brain gets used to a steady drip of quick, effortless rewards, slower real-world tasks — a work project, a book, a conversation — start to feel flat by comparison, and harder to start. Frequent notifications fracture attention even in people without ADHD, and the constant task-switching leaves less focus for everything else. Late-night scrolling then steals the sleep that ADHD most needs. It's a loop that quietly trains the brain toward the shallow end.