Sleep in older adults

Sleep changes throughout life. In older adulthood, sleep is shaped by changes in the circadian body clock systems, health conditions, retirement lifestyle and routines, and responsibilities of adult life. Sleep continues to play an essential role in memory, mood, immune function, cardiovascular health, metabolism, safety, independence, and quality of life.

If you wake earlier than you used to, spend more time awake during the night, or feel less refreshed in the morning, you are not alone. Many older adults notice that sleep becomes lighter, more fragmented, or more sensitive to changes in routine. Whilst these changes are common, poor sleep is not something you simply have to accept as part of aging. This page explains what happens to sleep as we age, why it matters, and when extra support may help.

Sleep remains essential in later life. It supports memory, attention, emotional regulation, immune function, metabolism, cardiovascular health, physical recovery, and the ability to participate in daily life.

It’s a myth that older adults need less sleep – they need 7-9 hours per day, just like younger adults. Getting enough good sleep is especially important for older adults because sleep interacts with many factors that affect health and independence. Fragmented, poorly timed, or insufficient sleep can make it harder to think clearly, manage mood, stay steady on your feet, recover from illness, maintain daily routines, and enjoy social connection. Daytime sleepiness can also increase safety risks, including falls and drowsy driving.

The internal body clock, or circadian rhythm, that controls sleep and wake patterns changes with age, and this can impact sleep quality, daytime energy and overall health. Research shows that long term disruption of normal rhythms can be harmful to health.  

This does not mean that every sleep change in later life is dangerous, or that sleep alone determines health. It does mean that sleep and daytime body rhythms deserve attention as part of whole-day health, quality of life, and healthy aging. Prioritizing good sleep is one of the best things you can do for your health and longevity.

Most older adults need 7–9 hours of sleep per night. The way sleep feels and is distributed across the 24-hour day may change.

Common sleep changes in older adulthood include:

• Going to bed and waking earlier 
• Waking more often during the night
• Spending more time in lighter stages of sleep
• Taking longer to fall asleep
• Getting less deep sleep
• Napping or dozing during the day
• Feeling less refreshed after a full night in bed
• Being more affected by changes in light, activity, routine, illness, or stress

These changes can be frustrating, but they are not the whole story. Sleep in older adulthood is shaped by both biology and context. Daylight exposure, nutrition, exercise, flexible retirement lifestyle, health concerns, medications and body changes can impact the quality and quantity of sleep. Fortunately some of these factors are treatable or manageable.

Poor sleep is not something that should just be accepted by older adults. it is important to separate expected age-related sleep changes from sleep problems that need support. 

The circadian rhythm is the body’s internal 24-hour timing system. It helps regulate sleep, alertness, body temperature, hormones, digestion, metabolism, immune activity, and many other body processes. Light is one of the strongest signals for this system.

The brain’s master clock, called the suprachiasmatic nucleus, receives light information from the eyes and helps coordinate other biological clocks throughout the body.

In older adults the internal body clock signals can weaken, which means that external cues like daylight, meal times, exercise and routines are more important for maintaining a healthy 24 hour rhythm and good sleep patterns. Changes in the body clock signals can also make it harder for older adults to recover after travel, illness, or daylight saving time changes.

Healthy sleep is not only about the number of hours. It includes several dimensions that work together.

Some sleep variation is expected with age. Ongoing sleep problems, however, are not something older adults or caregivers should simply dismiss.

• Earlier sleep and wake times: circadian shift is common, but if a sleep-wake schedule is impacting participation or wellbeing it could signal a problem.
• Nighttime awakenings: Frequent awakenings due to pain, urination, stress, night sweats, breathing problems or other medical concerns need attention.
• Lighter sleep and less deep sleep: Sleep structure changes with age, and it can make sleep feel less restorative despite getting enough sleep.
• Daytime sleepiness and naps: Short planned naps can be helpful and healthy, but unintentional dozing, difficulty staying awake or drowsy driving could be signs of a sleep problem.
• Reduced daylight, activity and routine: Lifestyle changes, assisted living, social isolation or physical disability can reduce cues that help anchor the circadian rhythms, and result in a shifted body clock.
• Medications and health conditions: Health conditions and symptoms that occur with aging can impact sleep. Some medications have side effects that cause insomnia, nighttime urination, vivid dreams or other disruptions to sleep.
• Sleep Disorders: some sleep disorders become more common in later life, such as restless legs syndrome, sleep apnea, and insomnia. Many are treatable and seeking care early can improve quality of life.

For people with limited mobility or those living in care settings, light, activity, meals, and social routines may need to be planned intentionally.

Consider talking with a healthcare professional if sleep problems are persistent, worsening, affecting daytime functioning, or causing concern.

It is especially important to seek support if an older adult has:

• Loud snoring, gasping, choking, or pauses in breathing during sleep
• Excessive daytime sleepiness
• Unintentional dozing during meals, conversations, or driving
• Falls or safety concerns at night
• Confusion, mood or memory changes
• A major change in sleep-wake pattern
• New or worsening depression, anxiety, irritability, or withdrawal
• Restless legs at night
• Acting out dreams, shouting, punching, kicking, or falling out of bed
• Nightmares or nighttime distress
• Insomnia that lasts for weeks or months
• Sleep disruption related to pain, bladder symptoms, menopause symptoms, medications, alcohol, or a medical condition
• Partner/caregiver concern about anything listed above