Why elderly people have trouble sleeping, and what helps

Adults over 65 are more likely than younger adults to get at least seven hours of sleep, according to a CDC survey, and yet many older adults also say they sleep badly. Both are true. Plenty of people sleep fine into their eighties, and plenty lie awake in the night or doze off at dinner and waking before the sun. If you've wondered why elderly people have trouble sleeping, the answer is some normal aging and some things a doctor can fix.

This guide explains how sleep changes with age, which changes to accept, and which broken nights have a cause worth chasing.

Older adults don't need less sleep

This myth causes the most trouble. According to the National Institute on Aging, older adults need about the same seven to nine hours as younger adults. What changes is how easily they get it in one stretch. When a parent says they "only need five hours now," they usually mean five hours is what they manage, and the shortfall shows up as afternoon fatigue, irritability and nodding off in the armchair.

The distinction matters. If someone sleeps eight hours in broken pieces, the goal is a smoother night, not more time in bed. If they truly sleep too little, the tiredness is real and worth taking seriously.

Sleep gets lighter with age

Sleep cycles through stages several times a night: light sleep, deep slow-wave sleep and dreaming REM sleep. With age, people spend less time in deep sleep and more in the lighter stages, which are easy to break. A creaking floor, a full bladder or a twinge of arthritis that a younger sleeper would never notice is now enough to wake someone.

That is why an older adult can spend eight hours in bed and still feel short-changed. The total may be close to right, but it is chopped into pieces, with less of the deep sleep that leaves a person rested.

Why bedtime keeps creeping earlier

Falling asleep in front of the evening news and waking at four comes down to the body's internal clock. A master clock in the brain sets the daily rhythm of sleepiness and alertness, cued by light and the hormone melatonin. With age it tends to drift earlier, a pattern doctors call advanced sleep phase.

The result is a whole night shifted forward. Sleepiness arrives at eight instead of eleven, and a full night from that start ends before dawn. That only becomes a problem when the person fights the evening sleepiness and stays up late, but still wakes at four. Bright light in the late afternoon and a dim, screen-free hour before bed can push the clock a little later.

Bathroom trips and the hour awake afterward

Ask an older adult what wakes them and the answer is often the bathroom. Getting up at night to urinate, called nocturia, becomes much more common with age and is one of the biggest causes of broken sleep in later life. Causes range from an aging bladder and, in men, an enlarged prostate, to heart or kidney conditions and the medications that treat them.

The trip is only part of it. A younger person goes back to sleep in minutes; an older adult in lighter sleep can lie awake for an hour. Easing off fluids in the two or three hours before bed, taking a prescribed water pill in the morning if the doctor agrees, and lighting the path to the bathroom softly so the trip doesn't fully wake the body, or cause a fall in the dark, all help. Our guide to incontinence in older adults covers bladder causes in more detail.

Pain, reflux and medications

A lot of insomnia in older adults is really daytime trouble carried into the night. Arthritis and back pain flare when a person lies still. Reflux gets worse lying flat. Breathlessness from heart or lung disease, restless legs, and the worry and low mood of anxiety and depression all keep sleep away.

Medications deserve a close look, because sometimes the fix is timing. A diuretic taken in the evening means bathroom trips all night. Beta-blockers, widely used for blood pressure and heart conditions, can lower the body's melatonin and disturb sleep, as Harvard Health explains. Steroids, decongestants and some antidepressants are stimulating and often better taken in the morning. Ask the doctor or pharmacist to review the whole list, including whatever your parent takes to sleep. The American Geriatrics Society advises older adults to generally avoid sedating antihistamines such as diphenhydramine, found in many over-the-counter "PM" products, because they can cause confusion, next-day grogginess and falls.

Sleep disorders hiding in plain sight

Some broken nights are a treatable disorder that goes unnamed for years. Obstructive sleep apnea, where the airway repeatedly closes and breathing pauses, is common in older adults and often missed, partly because it can show up as daytime exhaustion, morning headaches or foggy thinking rather than dramatic snoring. Restless legs syndrome, an urge to move the legs that peaks at night, and a condition in which people act out their dreams also become more common with age.

These respond to treatment, and untreated sleep apnea is linked to heart problems and to the daytime sleepiness behind falls and accidents. Tell the doctor about loud snoring with pauses or gasping, kicking or thrashing in sleep, or an overwhelming urge to nap. A sudden change in sleep with new confusion or low mood is its own warning sign, and in someone with dementia can overlap with sundowning.

What to try first

Before any prescription, the most effective tools are plain and free. They work on the body clock and on the drive to sleep that builds through a waking day.

• Keep the wake time fixed, weekends included. It anchors the whole clock.
• Get daylight. Time outdoors or by a bright window during the day strengthens the day-night rhythm that fades with age. Outdoor light, even on a cloudy day, is far brighter than indoor lighting.
• Keep naps short and early. A long or late nap uses up the sleepiness needed at bedtime.
• Move during the day. A daily walk deepens night sleep. Keep vigorous activity out of the last couple of hours before bed.
• Watch the evening cup and glass. Caffeine lingers for hours, and alcohol brings sleep on fast but breaks it up later in the night.
• Get up when sleep won't come. Sit somewhere quiet in dim light and go back to bed when drowsy, so bed stays linked with sleep.

Light timing matters. Morning light pulls the clock earlier; late-afternoon and early-evening light pushes it later. For someone whose nights never quite settle because they spend all day indoors, morning light helps most. For the early-to-bed, up-at-four pattern, aim for light later in the afternoon. Either way, keep the evening dim: screens off an hour or so before bed, a low lamp instead of the overhead light, and a soft night light on the way to the bathroom.

If insomnia lasts for months despite these habits, ask the doctor about cognitive behavioral therapy for insomnia, or CBT-I. The American College of Physicians recommends it as the first treatment for chronic insomnia, ahead of sleeping pills, and it works for older adults too.

The bedroom itself

Because older adults sleep more lightly, the room matters more than it used to.

Temperature. A Hebrew SeniorLife study of older adults found sleep was most efficient with the bedroom between 68 and 77 degrees, and that the best temperature varied from person to person. Set it on purpose rather than leaving it to whatever the house does overnight.

Light. Make the bedroom dark once the lamp is off, and keep evening light elsewhere low and warm-toned.

Noise. Sound doesn't have to wake someone to lighten their sleep. Rugs and lined curtains soften a hard room, and a fan or white noise machine covers irregular sounds. Silence the phone overnight and fix the appliance that has started to rattle.

Two weeks in a notebook

Sleep is hard to judge from the inside. Nights blur together and one bad one colors the memory of a decent week. Keep a notebook on the nightstand, and each morning write down the time in bed and the time up, roughly how long it took to fall asleep, how often the night broke and for how long, any naps, and what the day held: caffeine, alcohol, time outdoors, activity and when the evening medications were taken.

Two weeks of that turns a vague complaint into a pattern, and it is the most useful thing to bring to the doctor. Give new habits a few weeks. If they don't help, that is useful too: it suggests a medical cause, and the doctor is the next step.

When the worry is what happens overnight

For some families, the hardest part isn't the sleep itself but the risk that comes with it. A parent who is unsteady on the way to the bathroom at night, who wakes confused and wanders, or who can't safely be alone overnight turns the small hours into the most anxious part of the day. No bedtime routine fixes that.

An overnight caregiver can help with the trip to the bathroom, settle someone who wakes confused, and be awake and close by so a fall or a wander doesn't become an emergency, while the family finally sleeps. For someone who also needs help during the day, companion care fills in the hours. Families in Middlesex County and our other service areas often find that overnight help is as much for everyone else in the house as for the person who can't sleep.

Most of the time, better nights start with a plain question: which of these causes is at work? Some of it is the ordinary drift of an aging body clock, to understand and work around. The rest, the pain, the pills, the bathroom trips and the hidden disorders, can be treated more often than families expect.