As we age, our circadian rhythms — the internal “clock” that coordinates the timing of our bodily functions, including sleep — change. That's why older adults tend to become sleepier in the early evening and wake earlier in the morning compared to younger adults.
Beneath the surface, your body is aging too, and sleep loss can speed up the process. A study done by UCLA researchers discovered that just a single night of insufficient sleep can make an older adults' cells age quicker. This might not seem like a big deal, but it has the potential to bring on a lot of other diseases.
As we get older, our circadian rhythms shift such that we get sleepier earlier in the evening (perhaps at 7-8 PM, or 19-20h) and we wake up 7-8 hours later, which is a bit too early in the morning (3-4 AM). This is a normal change. But many older people don't want to go to bed earlier even though they are tired.
As adults age, advanced sleep phase syndrome sets in, causing the body's internal clock to adjust to earlier bed and wakeup times. But some seniors continue to stay up late, as they did in their younger years. Sleep deprivation is often the result.
Sleep and Aging
Older adults need about the same amount of sleep as all adults—7 to 9 hours each night. But, older people tend to go to sleep earlier and get up earlier than they did when they were younger. There are many reasons why older people may not get enough sleep at night.
According to their internal body clock, most older adults need to go to sleep around 7 p.m. or 8 p.m. and wake up at 3 a.m. or 4 a.m. Many people fight their natural inclination to sleep and choose to go to bed several hours later instead.
Sleep Changes in Older Adults. Most healthy older adults aged 65 or older need 7-8 hours of sleep each night to feel rested and alert.
However, most people start experiencing a decline in their energy levels by the time they reach their mid-thirties. And this decline in energy levels can be attributed to various factors, including changes in metabolism, hormonal changes, and lifestyle factors such as diet, exercise, and stress.
They Have Higher IQs
Night owls who opt to wake up in the later hours of the day and stay awake until the wee small hours of the morning may be exhibiting a form of evolution. In any case, people with divergent circadian cycles are considered to be more intelligent than those with normal sleep cycles.
As reviewed above, most sleep parameters decline with age until the age of 60 years, but remain generally unchanged after 60 years of age. Also, older adults are less likely to complain of sleep problems and tend to accept some noticeable sleep alterations as normal changes with aging.
Those with combined hyperactive-impulsive and inattentive ADHD experience both poor sleep quality and a later bedtime. Many ADHD symptoms are similar to symptoms of sleep deprivation. Among others, adult ADHD sleep problems can lead to forgetfulness and difficulty concentrating during the day.
What is ASPD? This is a sleep disorder where you keep going to bed and waking up too early. For example, you might find it hard to stay up until a normal bed time such as 10pm. You might feel a strong urge to go to bed as early as 8-9pm.
This depends upon your genetics, health, and lifestyle. Generally, an adult needs between 7 and 9 hours of uninterrupted sleep per night. A person will generally stabilise in how much sleep they require during young adulthood and stay at the same level for the rest of their life.
Fatigue in older adults sometimes occurs as a result of chronic pain from arthritis, fibromyalgia, or other chronic conditions. Your body may tire itself out from trying to manage the pain or inflammation, and living with chronic pain can also lead to mental or emotional fatigue.
There are plenty of potential culprits. Medications for blood pressure, sleep problems, pain and gastrointestinal reflux can induce fatigue, as can infections, conditions such as arthritis, an underactive thyroid, poor nutrition and alcohol use. All can be addressed, doctors say.
Usually, our energy declines because of normal changes. Both genes and environment lead to alterations in cells that cause aging muscles to lose mass and strength and to become less flexible. As a result, strenuous activities become more tiring.
Traditionally, the “elderly” are considered to be those persons age 65 and older.
Sleeping a lot isn't necessarily a bad thing. Sleep is important. Not getting enough sleep puts you at risk for health problems, from heart disease to obesity to diabetes. However, sleeping a lot all of a sudden when you didn't before might be a reason to look closely at what is going on with your health.
The Best Time to Sleep Is Between 8 p.m. and Midnight
Within that four-hour timeframe, you should go to bed when you're tired enough to get to sleep easily, but early enough to be well-rested the next day.
“There is no such thing as a “fixed or ideal time” to go to bed which will suit all individuals. It is generally advisable to fall asleep between 10 pm to midnight as for most people this is when the circadian rhythm is at a point that favours falling asleep.”
Sleep patterns tend to change as you age. Most people find that aging causes them to have a harder time falling asleep. They wake up more often during the night and earlier in the morning. Total sleep time stays the same or is slightly decreased (6.5 to 7 hours per night).
While a 30- to 90-minute nap in older adults appears to have brain benefits, anything longer than an hour and a half may create problems with cognition, the ability to think and form memories, according to the study published in the Journal of the American Geriatrics Society.