Tue · 25 Aug 2026
>therundown.today
→ Start here: controls by age
Social

Serotonin

Slang for a mood boost or dopamine hit from something enjoyable. Teens use it when seeking out content, activities, or people that make them feel good. Useful for parents to understand because it reflects how teens think about mental health informally—recognizing when they're seeking comfort or escape.

How kids use it

"I need my serotonin" or "scrolling TikTok is my serotonin"

Is “Serotonin” something to worry about?

No — "Serotonin" is ordinary 2026 teen vocabulary, not a warning sign. Knowing it just makes you harder to talk past.

  • Use it slightly wrong at dinner. You’ll get an eye-roll and a free vocabulary lesson.
  • If you’re seeing it alongside apps you don’t recognize, run the 30-second check Is it safe? checker

Share this definition

More Social terms