The National Sleep Foundation (NSF) has released a comprehensive review reaffirming its 2015 sleep duration recommendations after a decade of research. This evaluation of 133 meta-analyses, encompassing up to 3,222 individual studies, emphasizes the continued relevance of the original guidelines, which provide evidence-based sleep duration recommendations for all age groups.

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In the original 2015 guidelines, NSF was the first organization to offer age-specific sleep duration advice from newborns to older adults. Since then, these recommendations have been cited over 9,000 times in academic literature and referenced widely in health discussions by major media outlets.

Joseph M. Dzierzewski, PhD, the study's lead author and Senior Vice President of Research and Scientific Affairs at NSF, noted that while new research has deepened the understanding of sleep health, the core message remains unchanged: adequate sleep is crucial for health. The reaffirmed sleep duration recommendations are as follows:

- Newborns (0–3 months): 14–17 hours

- Infants (4–11 months): 12–15 hours

- Toddlers (1–2 years): 11–14 hours

- Preschoolers (3–5 years): 10–13 hours

- School-aged children (6–13 years): 9–11 hours

- Teenagers (14–17 years): 8–10 hours

- Young adults (18–25 years): 7–9 hours

- Adults (26–64 years): 7–9 hours

- Older adults (65+ years): 7–8 hours

These guidelines acknowledge individual variability in sleep needs due to biological, psychological, and social factors. However, the review revealed that more research is necessary on the sleep needs of younger children, as fewer meta-analyses have focused on this age group.

Additionally, the review investigated sex differences in sleep needs. Out of 133 meta-analyses reviewed, 67 examined this aspect, with most concluding that men and women do not have significantly different sleep requirements. Consequently, NSF does not support separate sleep duration recommendations based on sex.

NSF's guidelines aim to assist individuals in determining their sleep needs for improved health and well-being. For further information, visit the National Sleep Foundation's website.