Sleep Score Guide

How Many Hours of Sleep Do I Need? Complete Age-by-Age Guide (CDC 2026 Guidelines)

7-9hAdult Recommendation

The CDC recommends 7 or more hours of sleep per night for adults aged 18-60. The American Academy of Sleep Medicine (AASM) specifies 7-9 hours. Yet over 35% of American adults regularly get less than 7 hours - making insufficient sleep a public health epidemic in the US.

Quick Answer

The CDC recommends 7 or more hours of sleep per night for adults aged 18-60. The American Academy of Sleep Medicine (AASM) specifies 7-9 hours.

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Sleep Recommendations by Age (CDC & AASM 2026)

Newborns (0-3 months): 14-17 hours. Infants (4-12 months): 12-16 hours including naps. Toddlers (1-2 years): 11-14 hours. Preschoolers (3-5): 10-13 hours. School-age (6-12): 9-12 hours. Teenagers (13-18): 8-10 hours. Adults (18-60): 7 or more hours. Adults (61-64): 7-9 hours. Adults 65+: 7-8 hours.

Why the CDC Says 7+ Hours Is Non-Negotiable

The CDC classifies regularly sleeping less than 7 hours as "short sleep" - a risk factor linked to obesity (45% higher risk), heart disease, type 2 diabetes, mental health disorders, and motor vehicle crashes. The 2016 CDC study across 50 US states found Mississippi (43.2%), Kentucky (39.6%), and Alabama (38.5%) had the highest rates of short sleep - above the national average of 35.2%.

Does More Sleep Always Mean Better Sleep?

No. Regularly sleeping more than 9 hours can indicate underlying health issues including sleep apnea, depression, or thyroid disorders. Quality matters as much as quantity. A person sleeping 7.5 hours at 90% efficiency scores significantly better than someone sleeping 9 hours at 70% efficiency. Use our free sleep score calculator to measure your quality, not just duration.

Signs You Are Not Getting Enough Sleep

You need an alarm every morning to wake up. You feel tired within a few hours of waking. You rely on caffeine to function. You fall asleep within 5 minutes of lying down (sign of sleep deprivation). You sleep significantly more on weekends. You have difficulty concentrating or making decisions. You experience mood changes or increased irritability.

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Frequently Asked Questions

How many hours of sleep do adults need according to the CDC?

The CDC recommends adults aged 18-60 get 7 or more hours of sleep per night. Adults aged 61-64 need 7-9 hours, and adults 65 and older need 7-8 hours.

Is 6 hours of sleep enough for adults?

No. The CDC and AASM both classify 6 hours as "short sleep duration" - associated with increased risk of obesity, diabetes, heart disease, and mental health issues. Only approximately 3% of the population carry a rare genetic mutation (DEC2) enabling healthy function on 6 hours.

How much sleep do teenagers need?

The CDC recommends 8-10 hours for teenagers aged 13-18. Adolescent brains are biologically shifted toward eveningness - making early school start times a public health concern. The American Academy of Pediatrics recommends middle and high schools start no earlier than 8:30 AM.

What happens if you only sleep 5 hours?

Five hours is significantly below the CDC minimum. Research shows that after 14 consecutive nights of 5-hour sleep, cognitive impairment equals that of someone who has been awake for 48 hours straight. The brain loses the ability to accurately self-assess its own impairment.

Can you catch up on lost sleep on weekends?

Partially. A 2019 Journal of Sleep Research study found that catch-up sleep on weekends partially reduces mortality risk from short weekday sleep. However, the circadian disruption from inconsistent schedules has independent negative health effects - so large sleep-ins are not a full fix.