Aging & Sleep After 40: Why Rest Gets Harder and What Can Help

Key takeaways

• Sleep often becomes lighter during midlife and beyond due to hormonal shifts and changes in circadian rhythm.^1-3

• Perimenopause and menopause commonly disrupt sleep, driven by fluctuations in estrogen and progesterone, hot flashes, and night sweats. ^{2, 4, 5}

• Cooling strategies, including cooling pillows and breathable bedding, may help reduce nighttime awakenings related to heat.⁶

• Pain and physical discomfort can contribute to interrupted sleep, especially in midlife and older adulthood.

• OTC sleep aids are intended for occasional sleeplessness and should only be used as directed.

• A layered approach — habits first, products second — helps support safe, sustainable sleep.

Many adults notice that sleep feels different after 40. Falling asleep may take longer, nighttime awakenings may become more frequent, and mornings can start earlier than expected. While these changes are common with age, they can still be frustrating and leave people wondering what’s normal and what may help.

Understanding why sleep changes in midlife can make it easier to take practical, informed steps toward more restful nights. While these changes are common, sleep experiences vary widely, and not everyone over 40 will face the same challenges or need the same solutions.^{7, 8}

How aging affects sleep⁷

As we age, the body’s natural sleep patterns gradually shift. Most adults still need about 7-9 hours of sleep per night, but aging can change how that sleep is structured.

With age, people tend to spend less time in deep, restorative sleep and more time in lighter sleep stages. This can lead to more noticeable and frequent awakenings, even when total sleep time appears similar. Sleep continuity may also decline, leading to more frequent overnight interruptions.

Older adults may wake up three or more times per night. Because sleep is lighter, they can also be more aware of being awake.^{7, 8}

Perimenopause and menopause: A key driver of sleep disruption in women

Perimenopause sleep problems

During perimenopause, hormone levels fluctuate unpredictably. Many women experience perimenopause sleep issues, including difficulty staying asleep, night sweats, and early-morning awakenings.

Hormonal variability can make sleep patterns feel inconsistent from night to night, adding to frustration and fatigue.

Menopause and sleep

Menopause sleep problems, including menopause-related sleeplessness and sleep disruption, are linked not only to hot flashes but also to ongoing hormonal changes and how they interact with the brain. Research suggests that up to half of women report sleep disturbance during this stage. ^{2, 4, 5}

After menopause, sleep challenges may persist. Lower estrogen, progesterone, and melatonin levels can contribute to increased risk of conditions that interfere with sleep, such as sleep apnea, anxiety, and mood changes.⁹ These factors can make sleep feel less restorative over time.

What helps support better sleep in midlife?

Support the sleep environment⁶

Because body temperature plays a major role in staying asleep, reducing nighttime heat can help support more continuous rest.

• Cooling pillows and cooling sheets may improve comfort for hot sleepers.

• Keeping the bedroom cool, dark, and quiet (around 65-68°F) may support sleep quality.

• Breathable bedding and moisture-wicking sheets and sleepwear can also help reduce nighttime overheating.

These strategies are especially relevant for menopause-related sleep issues tied to night sweats.

Address discomfort that can interrupt sleep

Pain and discomfort, such as muscle or joint aches, can make it harder to stay asleep.

For some adults, topical pain relief, such as TYLENOL® PRECISE® Nighttime Pain Relieving Cream , applied before bedtime, may help provide temporary relief of minor muscle and joint discomfort.

Understanding OTC sleep aids and sleep supplements

Many adults explore over-the-counter sleep aids or natural sleep supplements when sleep becomes disrupted. It’s important to understand how these options work and their limitations.

Dietary supplements, such as melatonin, are regulated differently than over-the-counter sleep medications and may affect individuals differently. Evidence suggests that for some people, melatonin may help with sleep quality when combined with healthy sleep habits.¹⁰ Talk to your doctor if you have any questions or concerns.

Can OTC sleep aids be used by older adults?

Many non-prescription sleep aids marketed for nighttime use contain diphenhydramine, a nighttime sleep aid. Those products are intended for occasional sleeplessness, not nightly use.

Older adults may be more sensitive to potential side effects, including next-day drowsiness, dizziness, or confusion.¹¹

Products intended to help with occasional sleeplessness can include:

• TYLENOL® PM Extra Strength , which combines acetaminophen with diphenhydramine for temporary relief of minor pain with accompanying sleeplessness.

• Simply Sleep® , which contains diphenhydramine only and does not include a pain reliever for relief of occasional sleeplessness.

All products should be used only as directed. Talk with a healthcare professional before use, especially if they take other medications or manage ongoing health conditions.

This information is not a substitute for professional medical advice, diagnosis, or treatment.

What other strategies help adults in midlife sleep through the night?

In addition to cooling strategies and a consistent bedtime routine, some adults explore other approaches such as relaxation techniques, mindfulness practices, or short-term use of supplements like melatonin.

These strategies may help support sleep for some individuals, particularly when used alongside healthy sleep habits rather than as standalone solutions.^{10, 12}

When to talk to a healthcare professional

If sleep problems persist for more than 2 weeks, interfere with daytime functioning, or if new symptoms occur, it may be time to seek medical guidance.

Chronic insomnia or sleep disruption is not something to “push through”, even when it’s common with aging.