# Meta-analysis of quantitative sleep parameters from childhood to old age in healthy individuals

Ohayon MM, Carskadon MA, Guilleminault C, Vitiello MV · Sleep 27(7):1255–1273 · 2004



## Key finding

Total sleep time and deep sleep decline modestly across adulthood — some reduction with age is normal.



[Read the paper](https://pubmed.ncbi.nlm.nih.gov/?term=Meta-analysis+of+quantitative+sleep+parameters+from+childhood+to+old+age+in+healthy+individuals)

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Educational summary of published research, not medical advice. Screening scores are not diagnoses. If a score is elevated or you feel unwell, talk to a clinician.

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