Brain chemicals for kids, explained with cartoons

Each chemical is a character in the crew. They are metaphors for what a body does, never a measurement of your kid.

• Dopamine for kids: what it really does (and what it doesn’t)Dopamine is about wanting and effort, not just pleasure. What it does in kids, why screens pull so hard, and small habits that give it good work to do.
• Serotonin for kids: mood, sleep and steady days explainedWhat serotonin does in a kid’s body, why it’s not a simple happiness switch, and how daylight, steady sleep and regular meals keep days calm.
• Endorphins for kids: why running and laughing feel so goodEndorphins are the body’s own comfort kit. How laughter and rough, breathless play help kids feel good, and how much movement kids need.
• Norepinephrine (noradrenaline) for kids: the attention spotlightNorepinephrine, also called noradrenaline, helps kids notice what matters. How it relates to focus and homework, and how to keep the spotlight steady.
• GABA for kids: the brain’s brake, explainedGABA is the brain’s main brake, the chemical that quiets signals after a big feeling. How kids borrow your calm, and what helps settle a stormy body.
• Oxytocin for kids: closeness, trust and the “I’m safe” feelingOxytocin is linked to bonding and trust, but it isn’t a love switch. What it does for kids, why context matters and which habits build closeness.
• Cortisol for kids: the stress hormone explained (it’s not the villain)Cortisol is a useful alarm and a morning wake-up, not a villain. What it does in kids, when stress gets heavy, and how a calm grown-up helps.
• What does melatonin do? Your kid’s own night signal, explainedMelatonin is the hormone the body makes to say night is coming. How light affects it in kids, why teens run late, and habits that help sleep.
• Ghrelin for kids: the hunger hormone behind hangry meltdownsGhrelin is the hunger hormone that rings before meals. Why hungry kids melt down over small things and how steady meals and snacks can help.
• Testosterone in teens: what it does in boys and girlsTestosterone helps drive puberty body changes in boys and girls. What it does, why it isn’t the same as aggression, and habits that support teens.Teens 13–17

Educational content only, not medical advice. New pages are added as we write them. All guides · Meet the crew