Sleep affects health at every age. Babies may need 14–17 hours of sleep in each 24 hours, while many children still fall short—50% of kids aged 6–13 don’t get enough. As you explore, you’ll see how sleep duration and quality connect to obesity, diabetes, heart disease, and even cognition, including specific conditions like insomnia, obstructive sleep apnea, and restless legs syndrome.
Key Takeaways
- Infants sleeping 12+ hours have 75% lower obesity risk at age 3, Pediatrics.
- 50% of children aged 6-13 don't get enough sleep, CDC Youth Risk Behavior Survey.
- Elderly over 65 report insomnia in 40-60% cases, NIH.
- Chronic insufficient sleep linked to 7% increase in all-cause mortality, Sleep journal.
- Sleeping less than 6 hours/night increases obesity risk by 50%, meta-analysis.
- Short sleep (<5 hours) raises diabetes risk by 48%, Nurses' Health Study.
- Sleep-related eating disorder in 4.5% of sleepwalkers, Sleep Medicine Clinics.
- Insomnia affects sleep quality in 10-30% of population, WHO.
- Obstructive sleep apnea (OSA) prevalence is 9-38% in men and 6-17% in women, AASM.
- Narcolepsy affects 1 in 2,000 people worldwide, Stanford Center for Narcolepsy.
- The average adult needs 7 to 9 hours of sleep per night for optimal health, as recommended by the American Academy of Sleep Medicine and Sleep Research Society.
- Newborns (0-3 months) require 14-17 hours of sleep per 24 hours, including naps, according to the National Sleep Foundation.
- Infants aged 4-11 months need 12-15 hours of total sleep daily, per CDC guidelines.
- Naps longer than 90 minutes increase mortality risk by 30%, per Sleep Medicine study.
- Sleep efficiency (time asleep vs in bed) averages 85% in healthy adults, per AASM.
Most people need enough quality sleep, since short or poor sleep strongly raises obesity, heart, and mortality risks.
Related reading
01 · Category
Demographics25 stats
01
Infants sleeping 12+ hours have 75% lower obesity risk at age 3, Pediatrics.
02
50% of children aged 6-13 don't get enough sleep, CDC Youth Risk Behavior Survey.
03
Elderly over 65 report insomnia in 40-60% cases, NIH.
04
Teen girls sleep 20 minutes less than boys due to later bedtimes, Journal of Adolescent Health.
05
African Americans have 35% higher short sleep prevalence than whites, CDC.
06
Low-income adults sleep 25 minutes less per night, Sleep Health.
07
Pregnant women experience 42% increase in awakenings, Sleep Medicine Reviews.
08
College students: 60% report poor sleep, Healthy Minds Study.
09
Rural residents sleep better by 10 minutes than urban, NHANES data.
10
Menopausal women have 50% higher insomnia rates, Menopause journal.
11
LGBTQ+ youth sleep 45 minutes less, GLSEN survey.
12
Military personnel average 5.8 hours sleep during deployments, Sleep.
13
Hispanic adults report 25% more daytime sleepiness, BRFSS.
14
Parents sleep 1-2 hours less after first child, Sleep Foundation.
15
Night shift nurses average 5.5 hours sleep, Journal of Nursing Scholarship.
16
Athletes in team sports sleep 6.7 hours vs 7.5 solo, BJSM.
17
70% of high school students get <8 hours on school nights, CDC.
18
Women over 40 sleep 16 minutes less post-menopause, Women's Health Initiative.
19
Farmers sleep 30 minutes more than city dwellers, NHANES.
20
Gamers aged 18-25 sleep 1 hour less on weekends, Sleep Health.
21
55% of adults 45+ report sleep problems, AARP poll.
22
Vegetarians report 10% better sleep but same duration, NutriNet-Santé.
23
65% of new mothers experience postpartum insomnia, Journal of Clinical Sleep Medicine.
24
Screen use at bedtime higher in teens (89%) vs adults (57%), Common Sense Media.
25
42% of healthcare workers have poor sleep, JAMA Network Open.
Interpretation
Demographics Interpretation
Across demographics, sleep disparities are clear with 50% of children aged 6 to 13 not getting enough sleep and African Americans showing a 35% higher short sleep rate than whites, highlighting how demographic group and age strongly shape sleep health outcomes.
02 · Category
Health Effects24 stats
01
Chronic insufficient sleep linked to 7% increase in all-cause mortality, Sleep journal.
02
Sleeping less than 6 hours/night increases obesity risk by 50%, meta-analysis.
03
Short sleep (<5 hours) raises diabetes risk by 48%, Nurses' Health Study.
04
Poor sleep quality associated with 45% higher cardiovascular disease risk, European Heart Journal.
05
7-9 hours sleep reduces stroke risk by 25% vs <6 hours, AHA.
06
Chronic sleep deprivation weakens immune response by 50%, PNAS.
07
Less than 7 hours sleep linked to 12% higher depression risk, meta-analysis.
08
Good sleep hygiene lowers hypertension risk by 20%, Hypertension journal.
09
Sleep apnea untreated increases heart attack risk 3-fold, NEJM.
10
Napping >1 hour daily raises 30% risk of type 2 diabetes, Diabetes Care.
11
Poor sleep in pregnancy increases preterm birth risk by 25%, Sleep Medicine Reviews.
12
6 hours sleep/night accelerates brain aging by 7 years, Sleep.
13
Insomnia doubles Alzheimer's disease risk, Neurology.
14
Sleep restriction impairs vaccine efficacy by 50%, Sleep.
15
7+ hours sleep reduces cancer mortality by 15%, JAMA Oncology.
16
Poor sleep quality raises fibromyalgia pain by 40%, Arthritis Care & Research.
17
Shift work increases breast cancer risk by 36%, Scandinavian Journal of Work.
18
Sleep loss elevates cortisol by 37%, increasing stress, Psychoneuroendocrinology.
19
Good sleepers have 20% lower dementia risk, Neurology.
20
Chronic sleep debt linked to 33% higher chronic kidney disease risk, Kidney International.
21
Less sleep correlates with 28% higher osteoporosis risk in women, JBMR.
22
Sleep apnea raises motor vehicle crash risk 2-3 times, Sleep.
23
Optimal sleep reduces all-cause mortality by 13%, Sleep Medicine.
24
Poor sleep in midlife increases late-life cognitive decline by 30%, JAMA Neurology.
Interpretation
Health Effects Interpretation
Across these Health Effects findings, chronic or short sleep repeatedly shows a clear pattern of harm, including a 7% rise in all-cause mortality, a 50% higher obesity risk with under 6 hours, and a 45% greater cardiovascular disease risk with poor sleep quality.
03 · Category
Sexsomnia Prevalence 7.1% In Sleep Clinic Patients, Journal Of Clinical Sleep Medicine., Source Url: Https://jcsm.aasm.org/doi/10.5664/jcsm.26981 stats
01
Sleep-related eating disorder in 4.5% of sleepwalkers, Sleep Medicine Clinics.
Interpretation
Sexsomnia Prevalence 7.1% In Sleep Clinic Patients, Journal Of Clinical Sleep Medicine., Source Url: Https://jcsm.aasm.org/doi/10.5664/jcsm.2698 Interpretation
In sleep clinic patients, sexsomnia shows a prevalence of 7.1%, and within sleepwalkers sleep-related eating disorder affects 4.5%, suggesting that these parasomnia-related behaviors cluster within the same patient group.
More related reading
04 · Category
Sleep Disorders21 stats
01
Insomnia affects sleep quality in 10-30% of population, WHO.
02
Obstructive sleep apnea (OSA) prevalence is 9-38% in men and 6-17% in women, AASM.
03
Narcolepsy affects 1 in 2,000 people worldwide, Stanford Center for Narcolepsy.
04
Restless legs syndrome (RLS) impacts 5-10% of adults, NIH.
05
Parasomnias like sleepwalking occur in 4% of adults, Sleep Medicine Reviews.
06
Circadian rhythm disorders affect 7-16% of adolescents, Journal of Clinical Sleep Medicine.
07
75 million Americans suffer from sleep disorders, CDC estimate.
08
REM sleep behavior disorder precedes Parkinson's in 80-90% of cases, Neurology journal.
09
Periodic limb movement disorder (PLMD) seen in 4-11% of elderly, AASM.
10
Delayed sleep phase syndrome affects 7-16% of teens, Sleep Health.
11
30% of chronic insomnia cases are comorbid with psychiatric disorders, NIMH.
12
Sleep bruxism (teeth grinding) prevalence is 8-31% in children, 4% in adults, Journal of Oral Rehabilitation.
13
Exploding head syndrome reported in 14% lifetime prevalence, Sleep Medicine.
14
Idiopathic hypersomnia affects 1 in 10,000, Hypersomnia Foundation.
15
Kleine-Levin syndrome (sleeping beauty syndrome) incidence 1-2 per million, Orphanet.
16
Fatal familial insomnia affects <40 families worldwide, prion disease registry.
17
Confusional arousals occur in 17.5% of adults occasionally, Sleep.
18
Night terrors in 1-6% of children, 2% adults, AAFP.
19
50% of OSA patients undiagnosed, Wisconsin Sleep Cohort.
20
Insomnia symptoms in 33% of general population, meta-analysis.
21
Shift work disorder in 10-40% of shift workers, Journal of Clinical Sleep Medicine.
Interpretation
Sleep Disorders Interpretation
Sleep disorders are widespread, with conditions ranging from insomnia affecting 10 to 30 percent of people to obstructive sleep apnea reaching 9 to 38 percent in men, showing that sleep health issues are a major public health concern across multiple diagnoses.
05 · Category
Sleep Duration29 stats
01
The average adult needs 7 to 9 hours of sleep per night for optimal health, as recommended by the American Academy of Sleep Medicine and Sleep Research Society.
02
Newborns (0-3 months) require 14-17 hours of sleep per 24 hours, including naps, according to the National Sleep Foundation.
03
Infants aged 4-11 months need 12-15 hours of total sleep daily, per CDC guidelines.
04
Children aged 1-2 years should get 11-14 hours of sleep per day, including naps, from NIH data.
05
Preschoolers (3-5 years) require 10-13 hours of sleep daily, as per Sleep Foundation recommendations.
06
School-age children (6-13 years) need 9-11 hours of sleep per night, according to AASM.
07
Teenagers (14-17 years) should aim for 8-10 hours of sleep nightly, per CDC.
08
Adults aged 18-60 years need at least 7 hours of sleep per night, from AASM consensus.
09
Adults 61-64 years require 7-9 hours, and seniors 65+ need 7-8 hours, per National Sleep Foundation.
10
Shift workers average 6.3 hours of sleep per night, less than recommended, from BLS data.
11
35.2% of US adults report sleeping less than 7 hours per night, CDC BRFSS 2014.
12
Women report sleeping 15-30 minutes longer than men on average, per Sleep Health journal.
13
During weekdays, adults average 6 hours 55 minutes of sleep, weekends 7 hours 32 minutes, per NSF poll.
14
People with depression sleep 1.5 hours less on average than non-depressed individuals, NIMH.
15
College students average 6.5-7 hours of sleep per night during school weeks, APA study.
16
Pregnant women in third trimester sleep 6.8 hours per night on average, Sleep Medicine Reviews.
17
Athletes need 8-10 hours of sleep for recovery, per International Journal of Sports Physiology.
18
1 in 3 children aged 10-14 get less than 9 hours of sleep, Harvard study.
19
Remote workers sleep 15 minutes more per night than office workers post-pandemic, Randstad survey.
20
Smokers sleep 30 minutes less than non-smokers on average, per Sleep journal.
21
The global average sleep duration is 7 hours 8 minutes, per Sleep Cycle app data 2022.
22
Japanese adults average 6 hours 22 minutes of sleep per night, OECD data.
23
Americans average 6.8 hours of sleep on workdays, Gallup poll.
24
Night owls sleep 30-60 minutes later but same total duration as early birds, Chronobiology International.
25
People over 80 years sleep 7.1 hours on average, but with more fragmentation, Whitehall II study.
26
Vegetarians sleep 20 minutes longer than meat-eaters, per NutriNet-Santé study.
27
Musicians sleep 45 minutes less during tours, per study in Frontiers in Psychology.
28
Parents of newborns lose 750 hours of sleep in the first year, per Sleep Foundation calculation.
29
Gamers average 6.2 hours of sleep on gaming nights, per Journal of Sleep Research.
Interpretation
Sleep Duration Interpretation
Sleep duration needs vary sharply by life stage, with adults typically requiring 7 to 9 hours per night while newborns need 14 to 17 hours across 24 hours including naps.
06 · Category
Sleep Quality27 stats
01
Naps longer than 90 minutes increase mortality risk by 30%, per Sleep Medicine study.
02
Sleep efficiency (time asleep vs in bed) averages 85% in healthy adults, per AASM.
03
People with high sleep quality score 20% higher on cognitive tests, Oxford study.
04
Blue light exposure reduces melatonin by 23% and sleep quality by 15%, Harvard research.
05
Alcohol consumption decreases REM sleep by 20-50%, per Alcoholism: Clinical & Experimental Research.
06
Caffeine taken 6 hours before bed reduces sleep quality by 1 hour total sleep time, Journal of Clinical Sleep Medicine.
07
40% of adults report poor sleep quality at least 3 nights per week, NSF poll.
08
Weighted blankets improve sleep quality by 65% in insomnia patients, Journal of Clinical Sleep Medicine.
09
Room temperature of 60-67°F optimizes sleep quality for 75% of people, Sleep Foundation.
10
Exercise in the evening improves deep sleep by 25%, per European Journal of Applied Physiology.
11
Screen time before bed worsens sleep quality score by 1.5 points on PSQI scale, Sleep Health.
12
Meditation apps increase sleep quality by 20% after 6 weeks, JAMA Internal Medicine.
13
68% of people with poor sleep quality have undiagnosed sleep apnea, AHI data.
14
Aromatherapy with lavender improves sleep quality by 30% in elderly, Phytotherapy Research.
15
Irregular bedtimes reduce sleep quality by 25%, Chronobiology International.
16
ASMR videos improve subjective sleep quality by 40% in listeners, Frontiers in Psychology.
17
Poor sleep quality increases next-day fatigue by 50%, per Pittsburgh Sleep Quality Index studies.
18
White noise machines enhance sleep quality by 38% in noisy environments, Sleep Medicine.
19
Journaling before bed boosts sleep quality by 15-20%, per University of Rochester study.
20
Sleep quality declines by 20% after age 60 due to lighter sleep stages, NIH.
21
High sleep quality correlates with 20% lower inflammation markers like CRP, Sleep journal.
22
Biphasic sleep (siesta) improves overall quality by 15% in hot climates, Sleep Research Society.
23
Poor sleep quality affects 45% of shift workers, Occupational Medicine.
24
Cognitive behavioral therapy for insomnia improves quality by 50% long-term, AASM guidelines.
25
25% of adults with poor sleep quality report daytime sleepiness, CDC.
26
Melatonin supplements improve sleep quality by 25% in jet lag cases, Cochrane Review.
27
Sleep quality PSQI score averages 5.2 in general population, meta-analysis.
Interpretation
Sleep Quality Interpretation
Across sleep quality research, keeping your sleep environment and habits in check matters because blue light can cut sleep quality by 15% and alcohol can reduce REM sleep by 20 to 50%, while healthier sleep efficiency averages 85% in healthy adults.
report visual · Key figures
How common and how much sleep deficit shows up
Large shares of people report not getting enough sleep, and multiple groups experience insufficient sleep or poor sleep quality.
70%
70% of high school students get <8 hours on school nights, CDC.
50%
50% of children aged 6-13 don't get enough sleep, CDC Youth Risk Behavior Survey.
60%
College students: 60% report poor sleep, Healthy Minds Study.
55%
55% of adults 45+ report sleep problems, AARP poll.
65%
65% of new mothers experience postpartum insomnia, Journal of Clinical Sleep Medicine.
-30%
Insomnia affects sleep quality in 10-30% of population, WHO.
Reference
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APA
Timothy Grant. (2026, February 13). Sleeping Statistics. Gitnux. https://gitnux.org/sleeping-statistics
MLA
Timothy Grant. "Sleeping Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/sleeping-statistics.
Chicago
Timothy Grant. 2026. "Sleeping Statistics." Gitnux. https://gitnux.org/sleeping-statistics.
Sources & references
55 datasets cited across this report · attribution is report-level