How Ageing Affects Sleep: Changes, Causes and Tips for Better Rest

Sleep changes naturally as we age. From our 60s onwards, most people experience lighter sleep, earlier wake times, and more frequent night awakenings. These shifts are driven by changes in the brain's internal clock, declining melatonin production, and reduced time in deep restorative sleep. Quality rest remains achievable at any age with the right strategies.

Have you noticed that sleep feels trickier as the years go by? You are not alone. Changes in sleep patterns are a normal part of ageing, but that does not mean poor sleep is inevitable. Understanding what is happening in your body is the first step towards doing something about it.

How does ageing affect your sleep patterns?

Ageing affects sleep through three main changes: the body's internal clock shifts earlier, melatonin production declines, and time spent in deep restorative sleep decreases. Most adults over 60 find they feel sleepy earlier in the evening, wake before sunrise, and experience lighter, more fragmented sleep even when spending the same time in bed.¹

As we get older, our sleep patterns naturally evolve. Understanding these changes can help make sense of what is happening in your body.

Sleep needs across life stages

• Birth to early childhood: Newborns sleep in short bursts. By six months, babies typically sleep five to eight hours at a stretch as a regular sleep pattern develops.
• Childhood to adolescence: Children need less sleep as they grow. Teenagers naturally shift towards later bedtimes and wake times. By adulthood, most people do well with seven to nine hours per night.
• Adulthood: Sleep patterns tend to stabilise in our 20s and 30s, with most people needing seven to nine hours to feel refreshed.
• Older adulthood: Sleep becomes lighter and less consistent. Seniors may spend more time in bed but find it harder to get uninterrupted rest. The sleep requirement itself does not change much. Seven to nine hours remains the target.

Common sleep changes in older adults

• Lighter sleep: Many older adults spend less time in deep sleep, leading to more frequent awakenings throughout the night.
• Earlier bedtimes and wake times: It is common to feel ready for bed earlier in the evening and to wake before sunrise. This happens because of shifts in the circadian rhythm, the body's internal clock.¹
• Shorter uninterrupted sleep: Frequent awakenings are more common with age, often due to lighter sleep stages or the need to get up during the night.

These changes do not mean we need less sleep. Our bodies may change, but quality, restful sleep remains just as important at 70 as it was at 30.

What is happening inside your body as you age?

Age-related sleep changes are driven by several biological processes: reduced efficiency of the suprachiasmatic nucleus (the brain's internal clock), declining melatonin levels, decreased sleep spindle activity, and increased inflammation. Each factor makes it harder to fall asleep, stay asleep, and reach the deeper stages of restorative rest.^1,2

Research helps us understand precisely how the brain, hormones and environment each contribute to age-related sleep changes.

• The suprachiasmatic nucleus (SCN): The SCN is a small cluster of cells in the brain that regulates when we feel sleepy and when we wake. With age, the SCN becomes less efficient, making it harder to maintain a regular sleep-wake cycle.^1,2
• Light exposure: Natural light is essential for keeping the circadian rhythm on track. Many older adults, particularly those with limited mobility or time outdoors, do not get enough daylight, making it harder to keep the internal clock in sync.³
• Sleep spindle activity: Sleep spindles are brief bursts of brain activity during non-REM sleep that support memory consolidation and deep rest. Research shows we experience fewer of these spindles as we age, contributing to lighter and more easily disrupted sleep.⁴
• Inflammation: Elevated inflammation in the body can interfere with SCN function, leading to irregular sleep patterns and difficulty staying asleep through the night.⁵
• Cognitive health and sleep: Poor sleep in older adults is associated with a higher risk of cognitive decline. Research suggests that addressing sleep quality proactively may also support long-term brain health.⁶

Why do older adults often wake up earlier and more frequently?

The circadian rhythm naturally shifts earlier with age, a process called advanced sleep phase. Combined with declining melatonin production, this makes older adults feel sleepy in the early evening and alert before sunrise. Melatonin, the hormone that signals the body to prepare for sleep, is produced in progressively lower quantities from middle age onwards.

The body's internal clock does not simply run slower with age. It shifts to an earlier schedule. This means the urge to sleep arrives earlier in the evening, and natural wake time moves earlier into the morning, regardless of when a person goes to bed.

Alongside this circadian shift, melatonin production declines steadily from middle age. Without sufficient melatonin signalling, both falling asleep and staying asleep through the night become more difficult.

Night-time awakenings are also more common due to lighter sleep stages. Small sounds or temperature changes that a younger person would sleep through may wake an older adult. Frequent trips to the bathroom overnight are among the most commonly reported sleep disruptors in older adults.

What lifestyle and health factors affect sleep quality in older adults?

Beyond biology, several lifestyle and health factors influence sleep quality after 60. Reduced physical activity, irregular routines following retirement, multiple medications, and various ongoing health needs can all disrupt sleep patterns. Understanding these factors is the first step towards addressing them.⁸

A range of factors beyond the biological can affect how well older adults sleep:

• Melatonin decline: As the body produces less melatonin, the natural sleep signal weakens. This affects how quickly sleep onset occurs and how well sleep is maintained through the night.
• Medications: Many older adults take multiple medications, some of which can affect sleep patterns. If you suspect a medication may be disrupting your sleep, speak to your GP before making any changes.
• Lifestyle changes: Retirement and reduced physical activity can lead to less structured daily routines, which in turn affects the regularity of sleep-wake cycles.
• Ongoing health needs: Various long-term health conditions can contribute to sleep disturbances. Cognitive health changes, including conditions such as Alzheimer's disease, are particularly associated with disrupted sleep patterns.⁶
• Restless legs syndrome: This condition causes uncomfortable sensations in the legs that make it difficult to fall asleep or stay asleep. It becomes more prevalent with age.⁷

These factors help explain why sleep quality often shifts in later life. Identifying the specific factors at play in your own situation makes it far easier to take meaningful steps forward.

What can older adults do to improve sleep quality?

Small, consistent changes to daily routines can make a significant difference to sleep quality in older age. Maintaining a regular sleep schedule, increasing natural light exposure during the day, and creating a comfortable sleep environment are among the most evidence-supported approaches for improving rest across the decades.⁸

If you are facing sleep challenges, the following strategies may help:

• Keep a consistent routine: Going to bed and waking at the same time each day, including weekends, helps keep the internal clock steady. Consistency is one of the most effective tools for better sleep.
• Stay physically active: Regular physical activity, such as walking or gentle stretching, supports deeper and more restorative sleep. Aim to finish vigorous activity at least two hours before bed.
• Create a sleep-friendly environment: Keep the bedroom cool, quiet and dark. Blackout curtains, earplugs, or white noise may help if light or sound is a problem.
• Be mindful of naps: A short nap of 20 to 30 minutes early in the afternoon can be refreshing. Long or late-afternoon naps, however, often make it harder to sleep well at night.
• Watch what you eat and drink: Avoid caffeine after the early afternoon, limit alcohol in the evenings, and keep meals light if eating close to bedtime.
• Wind down before bed: A calming pre-sleep routine, such as reading, gentle meditation, or listening to quiet music, signals to the body that it is time to sleep.
• Get natural light during the day: Morning light exposure is particularly helpful for keeping the circadian rhythm anchored. Even 20 to 30 minutes of outdoor time in the morning can make a difference.³

When should you speak to a healthcare professional about sleep?

If sleep difficulties are persistent, affecting daytime energy levels, or impacting quality of life, speaking to a healthcare professional is the appropriate next step. A GP can assess what is contributing to poor sleep and discuss options suited to your individual circumstances.

Sleep is just as important in your 70s as it was in your 20s. Persistent difficulties with sleep deserve the same attention as any other ongoing health concern.

For those who want to explore alternative healthcare pathways, a telehealth consultation with an AHPRA-registered practitioner can be a convenient first step. During a clinical assessment, a registered medical practitioner will determine what options may be appropriate for your situation.

Speak to an AHPRA-registered nurse to find out whether Alternaleaf's alternative healthcare services may be right for you.

Ageing may change how you sleep, but it does not have to mean poor sleep. Understanding the shifts that happen in the body, and the practical steps that can address them, puts restful nights within reach at any age.

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Frequently asked questions

How many hours of sleep do older adults need?

Sleep needs do not change significantly with age. Most adults, including those over 65, still need seven to nine hours of sleep per night. The difference is that older adults may find it harder to achieve this due to lighter sleep stages, more frequent awakenings, and shifted sleep timing.

Is it normal to wake up earlier as you get older?

Yes. The circadian rhythm naturally shifts earlier with age. Many older adults feel genuinely sleepy by early evening and find themselves waking well before dawn. This is a biological change, not a sign of a sleep disorder.

Does the quality of sleep change with age?

Yes. Older adults spend less time in slow-wave (deep) sleep and more time in lighter sleep stages. This means sleep is more easily disrupted and may feel less refreshing, even after the same number of hours in bed.

Can regular exercise improve sleep quality in older adults?

Research supports regular physical activity as one of the most effective lifestyle approaches for improving sleep quality. Walking, swimming, yoga, and light resistance training are all well-tolerated by older adults and have been shown to support deeper, more consistent sleep.

When should an older adult see a doctor about sleep concerns?

If sleep problems are persistent, causing significant daytime fatigue, affecting concentration, or impacting quality of life, it is worth speaking to a GP. A healthcare professional can assess whether an underlying health factor is contributing and discuss options appropriate to your circumstances.