KIDSCaffeine in children's diets harms their sleep and brain development
Is this true? Make your call, then see what the science says.
Short answer: It depends. The evidence is mixed.
Caffeine can disturb sleep, especially in large doses, and children should limit it. But the research found no clear proof that normal dietary amounts harm children's brain development.
AI-generated summary of the research cited · not reviewed by a medical professional · checked 18 October 2026 · How we checkWhat the research found
Australian health guidance says large doses of caffeine can cause anxiety and difficulty sleeping. A 2014 review in Pediatrics named caffeine as one factor behind sleep loss in teenagers. A 2024 review of 33 studies of diet and sleep in 12 to 18 year olds found mostly cross-sectional, self-reported studies. That kind of study shows links, not cause and effect.
A 2021 randomised trial in 20 adult men found that 3 doses of 150 mg a day for 10 days delayed REM sleep and worsened sleep quality. This was in adults, not children, so it only hints at what may happen in kids.
The evidence on brain development is thin. Food safety guidance notes that an expert group found signs of more anxiety in children at about 3 mg of caffeine per kilogram of body weight a day. For children aged 9 to 13, that is about 120 mg a day, or roughly two cans of cola. None of the research reviewed showed lasting harm to a child's developing brain from dietary caffeine.
What it doesn’t mean
- This does not mean a little caffeine is proven to damage a child's brain. It means that sleep problems are plausible and that long-term brain effects have not been shown either way.
- Caffeine given as medicine to premature babies for breathing pauses is a different situation. A large trial found benefits for breathing in that setting. It says nothing about caffeine in food or drinks.
- Energy drinks are higher in caffeine and are labelled as not suitable for young children. If your child has trouble sleeping, seems anxious or has a racing heart, talk to your GP or child health nurse.
Sources
General information only, not medical advice. KIDS fact-checks are generated by AI from published research and are not reviewed by doctors or other health professionals. They can be wrong or out of date. Always talk to your GP or child’s doctor about your child, and call 000 in an emergency. Spotted a problem? Tell us.
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