# Why does my sleep change as I get older?

> Perhaps you woke before five again this morning, the house still dark, and lay there trying not to disturb anyone while the day ahead stretched out long. If your nights are no longer the ones you used to have, there's more to know about why, and about what can still help.

**In short:** Sleep that comes earlier, runs lighter and breaks into more brief wakings is a normal part of getting older[^1]. In healthy people most of that change is done by around sixty, and little more follows[^2]. A clear or sudden worsening often comes with things that can be helped, such as pain, a medicine or a bladder, and some, like your time in bed, are yours to change.

You used to sleep through the night, and now the morning comes before you’re ready for it. You’ve been told, by friends and even by a doctor, that it’s your age. Does that mean nothing can be done? Or could the people who keep saying “age” be missing something?

## Is this just getting older?

Some of it is, and it’s worth knowing which part. If you find you’re sleepy earlier in the evening, awake earlier in the morning, a little slower to drop off and more easily woken by a noise in the street, you’re describing the familiar shape sleep takes in later life, with more brief wakings in the night as well[^1]. Across adult life sleep grows a little shorter and lighter, with less deep sleep and more time awake after first dropping off[^2]. None of this on its own is a sign that something is wrong.

Does it keep getting worse from here? Researchers who gathered dozens of overnight sleep studies of healthy volunteers found that most of the change had already happened by around 60[^2]. After that, only one thing kept falling: how much of the time in bed was spent asleep[^2]. People of the same age differ a great deal too, and some older adults sleep much as they did decades before while others change a lot[^1].

So the years change the shape of sleep more than they take it away. If your nights have worsened clearly or suddenly, though, they’re telling you about more than the calendar.

## Why do I wake at four and nod off by nine?

Awake at four with nothing yet begun, and by nine in the evening the armchair has you. The two ends of that day are connected. In healthy volunteers living at home, the older people went to bed about an hour and a half earlier than younger adults, and woke nearly two hours earlier[^3], so their whole night had slid earlier.

Lab work suggests why the morning comes so soon. Through the day sleep pressure builds, and through the night it drains away. By the early hours most of it is spent, and it’s the body clock that keeps you asleep until morning. In older people both signals are weaker, so sleep in the second half of the night breaks up sooner and waking comes earlier[^4].

At the other end of the day, the lift in alertness that keeps younger people going through the evening seems to fade with age, and the clock itself may lose some of its cells over the years[^1]. That may be why the armchair grows so hard to resist at nine. Sleep still comes, then. It comes at hours you didn’t choose, early in the evening and over before dawn. There’s more on this in [why you might wake too early](https://nitez.com/waking-too-early) and [how the body clock decides when you’re sleepy](https://nitez.com/body-clock).

## Do older people need less sleep?

**Older people need less sleep.**

It fits what many people notice: you wake earlier and sleep fewer hours than you once did. And when healthy older volunteers were given up to twelve hours in bed at night and four more in the afternoon for several days, they ended up sleeping about 7.4 hours a day, against 8.9 for younger adults[^3].

Researchers don’t agree yet on what that means. Some read it as a smaller need, since older people also bounce back less after a short night and feel less sleepy; others think the need is still there and the aging brain registers and makes sleep less well[^1][^3], partly on the strength of animal studies. Whichever reading is right, an older person sleeping around seven hours isn’t falling short of some lost eight, and lying in bed longer won’t make the brain produce more sleep. An expert panel put the right range for healthy older adults at seven to eight hours, against seven to nine for younger adults, and said some people do well outside it[^5]. There’s more in [how much sleep you really need](https://nitez.com/how-much-sleep).

## Why does lying in longer seem to make it worse?

If you’ve tried going to bed earlier, or staying in bed longer to catch up, you may have found the extra hours filling up with lying awake. Why would more time in bed bring more waking? The same volunteers offer a clue. The 18 older people among them usually spent about eight hours in bed at home, and when their sleep was measured in the lab they slept about six and a half[^3]. That leaves an hour and a half or so of lying awake, spread through the night. The researchers suggest that choosing more time in bed than the sleep your body now makes may itself feed the sense of waking in the night and waking too early[^3].

**Older volunteers spent longer in bed than they could sleep, even given every chance**

Each outline is a group’s usual time in bed at home, worked out from their bed and waking times[^3]; the firm bar is how much of it the older group slept in the lab, gathered together though it came in pieces. The dotted line is the most each group slept a day when offered up to sixteen hours in bed[^3]. The younger adults’ nights fit inside what they could sleep; for the 18 healthy older volunteers, the lit end of the night is time in bed that no sleep was left to fill.

Time in bed at home

Asleep in that time, in the lab

The most they slept a day, given every chance

In bed past the most they slept

- **Younger adults** 35 healthy volunteers

- **Older adults** 18 healthy volunteers

Once there’s no alarm, the mornings can stretch out, and it can feel like a failure when sleep doesn’t fill them. On average, though, retiring made sleep a little easier. In a large French study that followed people for years either side of retiring, the odds of reporting disturbed sleep fell by about a quarter once they stopped work[^6]. It went the other way for people who retired because of ill health, whose sleep got worse[^6].

That study asked how people slept, and didn’t count the hours spent lying awake in bed. If your mornings in bed have stretched since the alarm stopped, a steady time for getting up is one way to bring them back toward the sleep you get.

## What else might be waking me?

Some nights the waking has a cause of its own: an ache in a hip, a full bladder, a new medicine, a snore loud enough to rouse you. Things like these grow more common over the years: sleep disorders, medicines, getting up to pass urine, long-term pain, hormonal changes, low mood and other illnesses[^1][^7]. Friends, a doctor or you yourself can easily put them down to age. Yet when researchers screened volunteers carefully for illness, medicines, alcohol and sleep apnea, the differences between young and old shrank, and some disappeared altogether[^2]. Researchers who surveyed older Americans came to a similar view, that older people’s sleep complaints are often about their health more than their age[^7]. So if your nights have got worse, it’s worth looking past the years, because much of what gets put down to age can be helped. Some of it is a doctor’s to find: the ache, the bladder, the medicine, the snore. Some of it you can change yourself, like hours in bed that run past the sleep you make, or a long doze in the chair.

Getting up in the night to pass urine, which doctors call nocturia, is so ordinary that people stop mentioning it. About half of people in their sixties do it[^8], and each trip can leave you lying awake afterwards. The trips can have more than one cause. Several medicines often prescribed in later life, diuretics (water pills) most of all, can add to them[^8]. And some researchers think lighter sleep wakes people first, so that they get up because they’re already awake[^8].

If your sleep changed after you started a new medicine, or you take several, it’s worth asking your doctor or pharmacist to look at them together for effects on sleep and nighttime trips to the bathroom. The other things on that list have pages of their own: [restless legs](https://nitez.com/restless-legs), [sleep apnea](https://nitez.com/sleep-apnea) and [insomnia](https://nitez.com/insomnia).

## What still helps, at any age?

You could keep a steady time for getting up, even after a poor night, and skip the earlier bedtimes and lie-ins meant to make up for it. That way your hours in bed drift back toward the sleep you really get. Going by the gap between about eight hours in bed and six and a half asleep[^3] in those healthy older volunteers, what you give up is mostly time awake in the dark. Doctors call this matching of time in bed to the hours you’re asleep sleep restriction, and the American Academy of Sleep Medicine suggests it as a treatment in its own right[^9]. Cutting below the sleep you already get is a different matter, and it’s best done with a CBT-I therapist or a doctor, as part of CBT for insomnia. In the early weeks a shorter night in bed can bring more sleepiness in the day, which in the guideline authors’ experience usually passes as sleep improves[^10], and if it doesn’t, they’ll help you ease off.

If the nights have been hard for a while, CBT for insomnia is the treatment the same academy strongly recommends for adults with long-running insomnia[^9]. Researchers pooled trials of behavioral treatments for insomnia, CBT for insomnia among them, and compared older and middle-aged people who’d been through them, and the people over 55 improved just as much, falling asleep sooner and lying awake less in the night[^11]. So whatever you’ve been told about your age, it hasn’t put this treatment out of reach. Pain or illness doesn’t either: in trials of adults of all ages, it helped people living with chronic pain, cancer or the after-effects of a stroke too, and side effects were rare[^12]. Wondering what it would mean in practice? There’s a page on [what CBT for insomnia would ask of you](https://nitez.com/cbt-for-insomnia).

Naps grow more common with age, and about half of them happen without being planned[^1]. If you nap, the afternoon is the time researchers have tested. In a small lab study they gave healthy people aged 55 to 85, who already slept well, an afternoon nap, and it barely touched that night’s sleep[^13]. It added to the day’s total, and they performed better the next day[^13]. That study only tried afternoon naps[^13], so a short nap earlier in the day is the safer bet, since a long doze late in the evening uses up the sleep pressure the night needs. If your whole night has moved earlier, you could try sitting somewhere bright in those evening hours in place of the doze in the armchair. There’s more in [whether naps are good for you](https://nitez.com/are-naps-good-for-you).

Moving your body helps too. In trials with middle-aged and older adults, regular exercise tended to improve how well people felt they slept, with aerobic exercise ranking best for overall sleep quality and yoga for how long and how efficiently they slept[^14]. If brisk exercise is hard on stiff joints, yoga is worth a try, given where it ranked for those longer, fuller nights.

- For a night like yours, light in the evening may help, and bright light at dawn may not. Evening light pushes the clock later and early-morning light pulls it earlier, so bright light at dawn can make early waking worse[^15][^16]. In a small study of adults who woke too early, two evenings of bright light moved their clocks about two hours later, and over the next four weeks they spent less time awake in the night and slept longer than a group given dim light[^17]. For a clock that runs well ahead of a person’s wishes, sleep doctors’ guidance gives evening light a weak recommendation, rating the evidence very low, from small trials in people around 70[^18]. That isn’t much evidence, but for a night that has slid earlier, evening light is the light worth trying.

- For nights like these, light seems to do less. In a trial at home, people averaging 64 with ordinary insomnia, whose clocks weren’t running early, sat in bright light each morning or evening. Their clocks shifted, but their sleep improved no more than in a group given dim light, with both groups sleeping better by their diaries[^16]. For this kind of night, the changes to time in bed and CBT for insomnia[^9][^11] have much firmer evidence behind them. There’s more on light in [how light affects sleep](https://nitez.com/light-and-sleep).

**If you’d like to try something**

You could keep one getting-up time for a few weeks, and go to bed when you feel sleepy instead of by the clock. If your whole night has moved earlier, more light in the evening may help, with the bedroom kept dim at dawn, though if your trouble is falling asleep, you can leave this one aside. And if you’re awake now and sleep isn’t coming, you could get up and sit by a low lamp, and go back to bed when sleepy. There’s more on [getting up when sleep won’t come](https://nitez.com/getting-up-at-night).

**What happens to deep sleep as we get older?**

The slow, large brain waves of deep sleep are already weaker in middle age than in young adulthood, and weaker still in later life, with the biggest drop over the front of the brain early in the night, where older adults average 75 to 80 percent less slow-wave activity than young adults[^1]. That figure describes the strength of the waves in the first part of the night, measured in the lab, and doesn’t mean three-quarters of the night’s deep sleep has gone.

The change isn’t the same for everyone. In a study of more than 2,500 adults aged 37 to 92, sleeping at home with sensors on, men over 70 had about half the slow-wave sleep of men under 55, while women showed no clear decline, and yet older women are more likely than older men to say they sleep poorly[^1], a puzzle nobody has yet explained.

- **Is my broken sleep harming my memory?** The earlier, lighter, more broken nights of ordinary aging aren’t the sleep of dementia, whose changes are different, or much more severe[^1]. Where sleep and memory are linked, the link seems to run both ways, since changes in the brain can disturb sleep as well as the other way round[^1]. For what you can do about your own nights, there’s [what else might be waking you](#what-else-might-be-waking-me) and [what still helps, at any age](#what-still-helps).

- **My father dozes in his chair most evenings. Should I worry?** Probably not on its own: daytime naps grow more common with the years, from about one person in ten at 55 to 64 to one in four at 75 to 84[^1]. Heavy daytime sleepiness isn’t a universal part of aging, though, and tends to go with pain, depression, sleep disorders and getting up at night to pass urine[^1], so if he struggles to stay awake through the day, it’s worth a conversation with his doctor.

- **Would melatonin, a sleeping pill or a nightcap help?** Each has its own page: [melatonin](https://nitez.com/melatonin), [sleeping pills](https://nitez.com/sleeping-pills) and [alcohol and sleep](https://nitez.com/alcohol-and-sleep).

Most of the measurements of normal aging come from healthy, screened volunteers, often studied in a lab, so they describe what age does on its own more than what an ordinary night at home with pain or a full bladder looks like.

- **Sleep becomes earlier, lighter and more broken with age, with less deep sleep and a little less sleep overall.** well-established

- **In healthy people, most of these changes have happened by around 60.** good-evidence

- **Much of what looks like age in sleep goes with illness, medicines and sleep disorders.** good-evidence

- **Researchers don’t agree yet on whether older people need less sleep or make less of the sleep they still need.** still-debated

- **CBT for insomnia is the recommended treatment for long-running insomnia, and behavioral treatments like it work as well over 55 as in middle age.** good-evidence

- **Bright evening light can move an early clock later and help early waking.** early-evidence

It’s worth talking to your doctor if:

- you snore loudly, or wake gasping or choking, whether or not anyone else is in the room to hear it ([Do I have sleep apnea?](https://nitez.com/sleep-apnea) goes through the signs)
- your legs won’t keep still in the evening ([Why do my legs feel restless at night?](https://nitez.com/restless-legs))
- you shout, punch or kick in your sleep, as if acting out a dream, which can be a sign of REM sleep behavior disorder, something a sleep study can diagnose and that can be treated[^19]
- you’re so sleepy in the day that staying awake is a struggle, since that often goes with pain, low mood, a sleep disorder or nighttime trips to the bathroom[^1]
- your mood has been low for a while, since depression often goes with insomnia in later life[^7]
- your sleep changed suddenly, or after a new medicine, in which case a review of your medicines is worth asking for, and please don’t stop or change any of them on your own

The nights of later life have their own shape, earlier and lighter and with more brief wakings. Within it there’s still room to sleep well, with a getting-up time you keep, hours in bed that match the sleep you get, and help for whatever else is waking you. And on the mornings you’re up before everyone else, there’s the first light at the window, and the cup in your hands while the house still sleeps.

## Related questions

- [Why do I wake up too early and can’t get back to sleep?](https://nitez.com/waking-too-early)
- [What is the body clock, and how does it decide when I'm sleepy?](https://nitez.com/body-clock)
- [How much sleep do I really need?](https://nitez.com/how-much-sleep)
- [What is CBT for insomnia, and what would it ask of me?](https://nitez.com/cbt-for-insomnia)
- [How does light affect my sleep?](https://nitez.com/light-and-sleep)

## Sources

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https://nitez.com/sleep-in-later-life · Through life · updated 2026-10-15