Colin Snow
Sleep is a basic human need, but it is a complex process. As people age, their sleep patterns change, and many older people experience insomnia and other sleep disorders. Studies show that more than half of older people in the US have at least one complaint about their sleep. While older people may need less sleep, they often plan for the same eight hours in bed. This is because they feel sleepy earlier in the evening and wake up earlier in the morning, causing them to think they aren't getting enough rest. Changes in the production of hormones such as melatonin and cortisol may also disrupt sleep in older adults. Additionally, older adults tend to take more medications, which can impair sleep. Lifestyle changes, such as retirement and social isolation, can also increase stress and anxiety, contributing to sleep issues. However, healthy habits, behavioural modifications, and cognitive behavioural therapy can help manage insomnia and improve sleep quality in older adults.
| Characteristics | Values |
|---|---|
| Sleep patterns | Older people tend to go to sleep earlier and wake up earlier than they did when they were younger. |
| Sleep quality | Older people's sleep tends to be shorter and lighter, and they may wake up more often during the night. |
| Sleep duration | Older people need about seven to nine hours of sleep each night. |
| Sleep disorders | Older people are more likely to experience sleep disorders such as insomnia, sleep apnea, restless legs syndrome, and periodic limb movement disorder. |
| Sleep disruption | Factors such as illness, medications, mental health issues, pain, and lifestyle choices (e.g., caffeine and alcohol consumption) can disrupt sleep in older adults. |
| Circadian rhythm | Changes in the body's internal clock, known as the SCN, can disrupt circadian rhythms, affecting when older people feel tired and alert. |
| Hormonal changes | Changes in hormone production, such as decreased melatonin and cortisol levels, can disrupt sleep in older adults. |
| Lifestyle changes | Retirement, loss of independence, and social isolation can increase stress and anxiety, contributing to sleep issues in older adults. |
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What You'll Learn
Declining melatonin levels
As people age, their bodies produce less melatonin, a hormone that helps promote sleep. Known as the "sleep hormone", melatonin is produced in response to darkness and helps regulate the body's internal clock, or circadian rhythm. This circadian rhythm is a biological cycle that regulates daily activities such as temperature, feeding, motor activity, and sleep.
The synthesis of melatonin is influenced by the presence or absence of light, promoting the onset of sleep and regulating the circadian rhythm. As daylight fades, the brain increases melatonin, signalling to the body that it is time to prepare for sleep. The production of melatonin is influenced by retinal perception of light due to its inhibitory action on the pineal gland, an endocrine gland located in the centre of the brain.
The deterioration of the Suprachiasmatic Nucleus (SCN) in the brain with age can also contribute to disrupted circadian rhythms. The SCN, which is responsible for maintaining these rhythms, receives information from the eyes and is influenced by light exposure. Insufficient exposure to daylight, which is common among older adults, can further disrupt the circadian rhythms and impact sleep patterns.
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Lifestyle changes, like retirement
Lifestyle changes, such as retirement, can significantly impact the sleep patterns of older adults. Retirement often results in a less structured sleep-wake schedule, leading to disruptions in sleep patterns. Here are some ways to address these changes and improve sleep quality:
Maintaining a Sleep Schedule
Older adults tend to experience a shift in their body's circadian rhythms, known as a "phase advance". This results in them feeling tired earlier in the afternoon and waking up earlier in the morning. Maintaining a consistent sleep schedule can help regulate their body's internal clock. This includes going to bed and waking up at the same time each day, even on weekends.
Daytime Activities and Sunlight Exposure
Retirement often leads to reduced physical activity and less structured daily routines. Maintaining an active lifestyle and engaging in regular exercise can help regulate sleep. Engaging in social activities, volunteering, joining senior groups, or taking adult education classes can provide a sense of structure, purpose, and social connection, which can positively impact sleep. Additionally, older adults should aim for at least two hours of sunlight exposure daily, as bright sunlight helps regulate melatonin and sleep-wake cycles.
Relaxation Techniques and Stress Management
Retirement can be a significant life change that induces stress and anxiety, impacting sleep quality. Relaxation techniques such as deep breathing, meditation, listening to calming music, or reading a relaxing book can help prepare the body for sleep. Keeping a journal to record worries, goals, and completed tasks can also help reduce stress and improve sleep.
Sleep Environment and Habits
Creating a soothing sleep environment is crucial. Avoiding caffeine, alcohol, and large meals close to bedtime can prevent disruptions. Limiting screen time before bed and ensuring the bedroom is technology-free, dark, and comfortable can promote better sleep.
Seeking Professional Help
If sleep difficulties persist, it is important to seek professional help. Discussing sleep issues with a doctor is essential, as they can refer to a sleep specialist or cognitive behavioral therapist for further treatment. They can also advise on prescription sleeping pills and sleep aids, weighing the benefits against potential risks.
While retirement can impact sleep patterns, making conscious lifestyle choices and adopting healthy habits can help older adults improve their sleep quality and overall well-being.
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Sleep disorders, like sleep apnea
Sleep disorders, such as sleep apnea, are a common reason why older people may experience difficulty sleeping. Sleep apnea is a breathing disorder that occurs during sleep, usually caused by a repetitive upper airway obstruction. As people age, their upper airway anatomy weakens, resulting in a higher chance of developing sleep apnea. This is further exacerbated by the tendency for muscles, including those in the airways, to weaken with age.
The primary symptoms of sleep apnea include snoring, daytime sleepiness, and decreased cognitive functioning. The risk of developing sleep apnea increases with age, with the prevalence of the disorder peaking in one's 60s and 70s. The severity of the disorder, however, may decrease in older adults. Older adults with sleep apnea will often experience excessive daytime sleepiness and can become dependent on frequent naps throughout the day. This, in turn, can lead to impaired attention, memory, response time, and performance, increasing the risk of falls due to mental impairment from sleep loss.
The combination of sleep apnea and excessive daytime sleepiness in older adults can significantly increase the risk of mortality. Sleep apnea can affect older adults with or without pre-existing conditions such as dementia. However, it is important to note that a decline in cognitive functioning due to sleep apnea may resemble dementia.
The treatment of choice for sleep apnea is Continuous Positive Airway Pressure (CPAP) therapy, which involves wearing a mask over the nose and/or mouth during sleep. This mask delivers constant air pressure to keep the airways open. Other treatments include positional therapy, oral appliances, weight loss, and, in severe cases, surgery.
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Medication and health conditions
Medications that may contribute to insomnia and other sleep disorders in older adults include beta-blockers, glucocorticoids, non-steroidal anti-inflammatory drugs, decongestants, and antiandrogens. Additionally, older adults with respiratory symptoms, physical disabilities, and poor perceived health are at an increased risk of experiencing sleep issues.
Mental and physical health conditions can also interfere with sleep. Conditions such as depression, anxiety, heart disease, diabetes, and arthritis can impact sleep quality. Older adults with multiple health conditions are more likely to experience poor sleep and symptoms of sleep disorders. Sleep disorders, such as insomnia, sleep apnea, and restless leg syndrome, become more prevalent with age.
The use of sleeping pills and sedatives to treat insomnia and other sleep disorders in older adults is common. However, research suggests that behavioural modifications and cognitive behavioural therapy may be more effective in the long term. While drug therapy can be useful for short-term management, changing habits, sleep schedules, and addressing underlying beliefs can lead to long-lasting improvements in sleep quality.
Additionally, lifestyle changes associated with ageing, such as retirement and social isolation, can contribute to sleep disturbances. These changes can increase stress and anxiety, impacting sleep. Understanding the complex relationship between ageing, sleep, and overall health is crucial to address the unique needs of older adults and improve their quality of life.
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Less exposure to daylight
Bright sunlight helps regulate melatonin, the sleep hormone, and our sleep-wake cycles. Older people can benefit from getting at least two hours of sunlight per day. This can be achieved by keeping shades open during the day or using a light therapy box.
In addition to promoting sleep, exposure to daylight can also provide older people with other health benefits. Regular exposure to sunlight is associated with improved cognitive function, enhanced mood, and stronger bones due to the body's production of vitamin D.
To improve sleep, older adults can also make changes to their daytime habits, particularly diet and exercise. Regular aerobic exercise during the day can promote good sleep by releasing chemicals in the body that promote more restful sleep. Swimming, dancing, and walking are some examples of aerobic activities that older adults can engage in to improve their sleep.
Additionally, older adults should avoid caffeine and alcohol late in the day, as these substances can interfere with sleep. Maintaining a consistent sleep schedule and a relaxing sleep environment, free from noise and light distractions, can also contribute to better sleep quality.
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Frequently asked questions
There are many reasons why older people may have trouble sleeping. Some of the most common causes include:
- Changes in the body's internal clock, or circadian rhythm, causing older people to fall asleep earlier and wake up earlier.
- Lifestyle changes, such as retirement, can lead to a less structured sleep schedule.
- Increased stress and anxiety due to significant life changes, such as loss of independence or social isolation.
- Changes in hormone production, such as decreased melatonin, which is important for regulating sleep.
- Increased use of medications that can interfere with sleep.
Sleep disorders become more common with age, including:
- Insomnia, which is the most common sleep problem in adults over 60.
- Sleep apnea, characterised by pauses in breathing during sleep.
- Restless legs syndrome, causing an urge to move the legs while resting.
- Periodic limb movement disorder, involving involuntary leg movements during sleep.
Sleep deprivation can have several negative consequences for older individuals, including:
- Increased risk of falls and accidents.
- Cognitive impairment, including attention and memory problems.
- Cardiovascular, pulmonary, and central nervous system issues associated with sleep-disordered breathing.
- Increased risk of nursing home placement for individuals with dementia and severe sleep disruption.
There are several strategies that older adults can use to improve their sleep:
- Establish a consistent sleep schedule and avoid irregular sleep-wake times.
- Limit caffeine and alcohol consumption, especially later in the day.
- Engage in regular physical exercise, such as aerobic activity, to promote restful sleep.
- Increase exposure to bright sunlight during the day to regulate melatonin and sleep-wake cycles.
- Address emotional issues and improve the sleep environment by minimising noise and light.
If sleep problems persist, older adults should consult their doctor or a healthcare provider. They may evaluate sleep habits, medications, and medical history to determine the underlying cause of sleep disruption. Cognitive behavioural therapy or other forms of counselling may also be recommended to improve sleep quality.
