Sleep in Older Adults: Why It Changes and How to Improve It

It's common to hear that older adults 'sleep less' or 'wake up a lot at night,' and simply accept it as an inevitable part of aging. That's partly true: sleep patterns change with age. But when sleep becomes genuinely insufficient or poor quality, there's a lot of room to improve it — it isn't something to just resign yourself to.

What actually changes with age

Deep sleep tends to decrease, nighttime awakenings become more frequent, and sleep timing tends to shift earlier (falling asleep and waking up earlier). This is largely normal. What isn't normal or desirable is excessive daytime sleepiness, sustained insomnia, or sleep so fragmented it leaves the person not feeling rested the next day.

Chronic pain as a common cause of poor sleep

Joint, muscle, or other pain is one of the most underestimated causes of poor sleep in older adults, especially when they wake up several times a night looking for a more comfortable position. Checking with the doctor whether daytime pain management is truly adequate, and whether the timing of pain medication properly covers nighttime hours, tends to improve sleep more than any sleep hygiene strategy applied in isolation without addressing this underlying cause.

Factors that worsen sleep (and can be changed)

• Long daytime naps, which reduce the drive to sleep at night.
• Little exposure to natural light during the day, which throws off the body clock.
• Caffeine or alcohol close to bedtime.
• Lack of physical activity during the day.
• Medication that interferes with sleep, worth reviewing with the doctor.
• Frequent nighttime urination, which breaks sleep into several fragments.

Naps: when they help and when they hurt

Naps have a bad reputation in general sleep hygiene advice, but the reality is more nuanced in older age: a short nap, 20 to 30 minutes, in the first half of the afternoon, can offset some of the fragmented nighttime sleep without interfering much with that night's sleep, and in many cases improves alertness and mood for the rest of the day. The problem comes with long naps, an hour or more, or ones taken very late in the afternoon, which significantly reduce the buildup of sleep drive for the night and contribute to a cycle of nighttime insomnia followed by more compensatory daytime naps. Finding each person's individual balance — some older adults function better with no nap at all, others need a short rest to get through the rest of the day — requires observing that person's own pattern rather than applying the same blanket rule to everyone.

Sleep hygiene, step by step

Keeping fixed bedtimes and wake times, even on weekends, helps stabilize the body clock. Getting natural light in the morning, limiting naps to a maximum of 20-30 minutes and before mid-afternoon, avoiding bright screens in the hour before bed, and keeping the bedroom cool, dark, and quiet are simple, well-supported measures. A bedtime routine repeated every night — brushing teeth, reading for a few minutes, turning off the main lights — also works as a signal to the body that rest is approaching.

When a person's day and night get flipped

In people with advanced dementia, it's fairly common for the usual sleep rhythm to flip: sleeping much of the day and staying awake, sometimes agitated, at night. This pattern is exhausting for both the person and their caregiver, and tends to respond better to adjusting the daytime routine — keeping them active and exposed to natural light during the day, avoiding long naps — than to trying to force nighttime sleep directly with medication, which carries particular risks in this age group that a doctor must weigh carefully.

The role of artificial light at night

Phone, tablet, and TV screens emit light that can interfere with the natural production of melatonin, the hormone that regulates sleep, especially when used in the hour before bed. In older adults, who already have naturally reduced melatonin production due to age, this effect can be even more pronounced than in younger people. Replacing screen use before bed with reading under warm, dim light, or simply talking with no screens involved, is a simple change with a real impact on how easily sleep comes.

The link between poor sleep and cognitive state

Sustained poor-quality sleep doesn't just cause daytime tiredness — it's also linked to higher risk of confusion, irritability, and in some studies, worse overall cognitive performance. This creates a worrying chain effect: the person sleeps poorly, is more confused or tired the next day, which in turn makes it harder to keep up the healthy routines that would help them sleep better the following night, perpetuating the cycle.

When to see a doctor

Loud snoring with breathing pauses, pain that interrupts sleep, or persistent insomnia that doesn't improve with routine adjustments deserve a medical visit — there could be a treatable underlying cause, like sleep apnea or poorly controlled pain, that won't resolve with 'better habits' alone. Sleep medications, for their part, should always be used under medical guidance and supervision at this stage, given the higher risk of side effects like falls or confusion.

The sleep environment matters too

Beyond personal habits, the physical characteristics of where someone sleeps directly affect sleep quality: a mattress suited to the person's joint needs, a cool rather than warm room temperature, and the absence of disruptive noise or flickering lights at night make a real difference. In a care setting, having rooms specifically designed to support rest — with good soundproofing, proper darkening, and staff attentive to handling nighttime interruptions with as little disruption as possible to other residents — is an aspect of care that's less visible at a glance than other, more obvious areas, but that directly impacts daily well-being and overall mood for the people living there.