Sleep Statistics: The Most-Cited Numbers, Properly Sourced
Every week a new sleep statistic goes viral — and half of them trace back to a press release about a mattress company. This page collects the numbers that are actually verifiable, each one attributed to the organization that produced it. Writers and researchers: cite freely — ready-made citation formats are here.
How much America sleeps
US adults report regularly getting less than the recommended 7 hours of sleep per night.
Source: CDC, Behavioral Risk Factor Surveillance System ↗US adults are estimated to live with a sleep disorder (Institute of Medicine estimate, cited by the CDC).
Source: CDC / Institute of Medicine ↗adult drivers report having fallen asleep while driving in the previous 30 days.
Source: CDC, Behavioral Risk Factor Surveillance System ↗Insomnia worldwide
adults worldwide report at least one insomnia symptom — trouble falling asleep, staying asleep, or waking too early.
Source: International epidemiological reviews (Ohayon et al.) ↗of adults meet the criteria for chronic insomnia disorder — symptoms at least three nights a week for three months or more.
Source: American Academy of Sleep Medicine / Sleep Foundation ↗Americans are estimated to have obstructive sleep apnea — and a large majority of cases are undiagnosed.
Source: American Academy of Sleep Medicine ↗The cost of poor sleep
per year — the estimated cost of sleep deprivation to the US economy (about 2.28% of GDP).
Source: RAND Europe, "Why Sleep Matters" (2016) ↗working days are lost in the US every year due to insufficient sleep, per the same RAND analysis.
Source: RAND Europe, "Why Sleep Matters" (2016) ↗police-reported crashes in the US in 2017 involved drowsy drivers, per federal traffic safety data.
Source: NHTSA (2017 data) ↗Stress and sleep
US adults report stress-related symptoms — headaches, fatigue, or disrupted sleep — in a given month.
Source: American Psychological Association, Stress in America ↗is the recommended sleep duration for healthy adults aged 18–64 (7–8 hours for adults 65+).
Source: National Sleep Foundation (2015 recommendations) ↗US workers are on non-daytime shift schedules — a pattern strongly associated with sleep disruption.
Source: US Bureau of Labor Statistics ↗Sleep supplement use (our niche)
US adults used melatonin in 2012 (1.3% of adults) — and published NHANES analyses show use roughly doubled across the 2010s.
Source: CDC NCHS Data Brief; JAMA (2022) ↗of US adults consume less magnesium than the estimated average requirement from food alone.
Source: NHANES dietary analyses (USDA/ARS) ↗of Reddit posts with explicit outcome language about glycine were positive in 2026 — the highest approval of any major sleep supplement.
Source: Naturally Restful, Sleep Supplement Reality Index (2026) ↗Our original data: the Sleep Supplement Reality Index
The supplement statistics above that carry our name come from the Sleep Supplement Reality Index — our own continuously-updated dataset of community-reported outcomes for twelve sleep supplements, built from thousands of discussion threads. If you write about sleep supplements and need a citable number for what users actually report experiencing, that page is the source — and our Reddit-verdict ranking puts those numbers in context.
Frequently asked questions
How many adults do not get enough sleep?
About 1 in 3 US adults report regularly sleeping less than the recommended 7 hours per night (CDC).
What percentage of adults have insomnia?
Roughly one-third of adults worldwide report at least one insomnia symptom; about 10% meet criteria for chronic insomnia disorder.
How much does sleep deprivation cost the economy?
Up to $411 billion per year in the US alone — about 2.28% of GDP — per RAND Europe's analysis.
Last reviewed October 2026. External statistics are summarized from the named sources and linked at domain level; follow through to the source for exact confidence intervals and methodology. Statistics on this page are descriptive public-health figures, not medical advice.