Sleep Problems in Older Age: What Really Changes and What Really Matters

Because sleep architecture changes measurably with age. Ohayon and colleagues analyzed 65 studies with 3577 healthy people aged 5 to 102 years in Sleep in 2004. In adults, total sleep time, sleep efficiency, the proportion of deep sleep (slow-wave sleep) and the proportion of REM sleep decrease significantly with age, while sleep onset latency, the proportion of light sleep and wake time after sleep onset (WASO) increase significantly. From the age of 60, sleep efficiency in particular continues to fall. In other words: sleep becomes shallower, more fragmented and more easily disturbed. What matters, though, is the distinction. These changes are a normal part of aging. A genuine sleep disorder that needs treatment is present only when daytime impairment, distress and a clear pattern are added. Many older people genuinely sleep differently, not necessarily pathologically. And very often it is not age itself that is the cause, but comorbidities, medications and a shifted day-night rhythm.

Yes, this is a well-documented phenomenon. Kim and Duffy describe the circadian sleep-wake disorders of older age in Sleep Medicine Clinics in 2018. With increasing age the internal clock shifts forward in many people (advanced sleep phase): you become tired earlier in the evening, around 8 or 9 pm, and wake up correspondingly early in the morning, around 4 or 5 am. This is often misinterpreted as a sleep maintenance disorder, but it is frequently a phase shift. The sleep itself can be sufficient, it simply occurs at a different time of day than socially expected. Causes are weaker light perception with age (a clouded lens, less time outdoors), reduced melatonin production and altered activity of the internal clock. A practical lever: targeted light exposure in the late afternoon and early evening can shift the phase back, instead of sitting in dim light in the evening and falling asleep at 8 pm.

Because the risk of falls and fractures rises markedly and the older body breaks down active substances more slowly. Treves and colleagues found in a meta-analysis of 14 studies with more than 830000 people in Age and Ageing in 2018: Z-drugs (zolpidem, zopiclone, zaleplon) significantly increase the fracture risk in older adults (odds ratio 1.63, 95 percent confidence interval 1.42 to 1.87). For zolpidem alone the injury risk was increased (odds ratio 2.05). Edinoff and colleagues report in Health Psychology Research in 2021 a fall odds ratio of 4.28 for zolpidem in hospitalized patients and an increased hip fracture risk (relative risk 1.92). More than 80 percent of the adverse effects in older inpatients were central nervous system related (confusion, dizziness, daytime sleepiness). On top of this come habituation, rebound insomnia on discontinuation and cognitive side effects. Sleeping pills are therefore rarely the first choice in older age, but rather the very last.

Polypharmacy means the simultaneous use of several, usually five or more, medications. In older age it is common because of multimorbidity. Many of these medications affect sleep directly or indirectly. Examples: beta blockers can suppress nighttime melatonin production, diuretics (water tablets) in the evening lead to nighttime urge to urinate, some antidepressants and steroids have an activating effect, caffeine-containing painkillers or bronchodilator medications interfere with falling asleep. At the same time metabolism ages: the liver and kidneys break down active substances more slowly, so substances linger longer in the body. The first diagnostic step for sleep problems in older age is therefore a complete medication review (medication analysis): What is the person taking, when, and which substance could disturb sleep or cause daytime sleepiness? Often a changed dosing time or stopping a dispensable substance achieves more than any new sleeping pill.

Yes, and it is considered the first choice, including in older adults. Cognitive behavioral therapy for insomnia (CBT-I) is a structured, drug-free method with components such as sleep restriction, stimulus control, cognitive restructuring and sleep education. Furukawa and colleagues analyzed 241 studies with 31452 participants in JAMA Psychiatry in 2024. The most effective components were cognitive restructuring (which increased the chance of remission by 68 percent), sleep restriction and so-called third-wave components (each by about 49 percent). In-person delivery with a therapist was most effective. The major advantage in older age: no fall risk, no cognitive dampening, no interaction with other medications and a lasting effect beyond the end of therapy. You can find a detailed guide in the dedicated spoke on CBT-I. The only important thing is to adapt the components to the life situation, for example dosing sleep restriction cautiously when daytime sleepiness increases the fall risk.

Exercise is one of the most underestimated levers. Hasan and colleagues evaluated 35 randomized studies with 3519 older participants in Sleep Medicine Reviews in 2022. Several forms of exercise improved sleep quality significantly compared with standard care, including tai chi, baduanjin, strength and endurance training as well as combined walking and strength training. Further effective components: a stable day-night rhythm with fixed wake-up and bedtimes, daylight in the morning and late afternoon, limiting daytime naps to a maximum of 20 to 30 minutes and not after 3 pm, limiting alcohol and evening fluids, a cool, dark sleep environment. With an advanced sleep phase, light hygiene in the evening can help. These measures carry no fall risk and complement one another. They are the foundation on which any further treatment is built.

Melatonin can play a role in older people because the body's own production decreases with age. Lemoine and Zisapel describe in Expert Opinion on Pharmacotherapy in 2012 the prolonged-release melatonin formulation (2 milligrams), which is approved in the EU for people aged 55 and over. In the studies it improved sleep quality and sleep onset latency, without rebound, withdrawal or hangover effects, and without the cognitive and balance-related impairments of classic sleeping pills. This makes prolonged-release melatonin a lower-side-effect option compared with benzodiazepines and Z-drugs, when a substance is needed at all. Important: the effect size is moderate, the evidence is heterogeneous, and melatonin does not replace the non-drug fundamentals. It can complement them, especially with a circadian phase shift. Use and dosing should be medically supervised, particularly with polypharmacy. This text does not replace a medical examination.

Slowly, in a structured way and with support, not abruptly. Tannenbaum and colleagues showed in the EMPOWER trial in JAMA Internal Medicine in 2014 that targeted patient information alone can achieve a great deal: 27 percent of people in the information group had discontinued their benzodiazepine after six months, compared with 5 percent in the control group, and a further 11 percent reduced their dose. The study examined 303 long-term benzodiazepine users aged 65 to 95 years. The principle: education about risks and alternatives, then a stepwise tapering over weeks to months, with the parallel build-up of non-drug measures (CBT-I, exercise, light hygiene). This cushions the rebound insomnia that can arise after abrupt discontinuation. Important: discontinuation should always be medically supervised, never done alone, and never abruptly after long-term use. The goal is not abstinence at any price, but less risk with at least the same or better sleep.

At the latest when sleep problems last longer than three to four weeks, markedly impair daytime functioning or come with warning signs. Warning signs are: loud snoring with observed breathing pauses (suspected sleep apnea, see the dedicated spoke), restless legs with an urge to move in the evening, pronounced daytime sleepiness with falling asleep during the day, new confusion, depressed mood, nighttime shortness of breath, frequent nighttime urination. Even when sleeping pills have already been taken for a longer time, a medical conversation is worthwhile to plan alternatives and a safe taper. The medical workup includes a medication review, the search for treatable underlying conditions (heart, lung, thyroid, depression, pain) and, where appropriate, a sleep medicine examination. Sleep problems in older age are not an unchangeable fate, they almost always have treatable components. This text does not replace a medical examination.