How Sleep Impacts Longevity: Tips for Restful Nights and Healthy Aging

Many times, we come back from work, school or university, tired and exhausted enough to fall asleep right as we enter our homes, but we must push through as some have extra work, others have tight deadlines to catch while other wish to enjoy some time by themselves. Here we are mostly sacrificing our sleep as we believe we can always catch up! Recent research involving over 172,000 adults reveals a significant link between adequate sleep and longevity. Men who get enough sleep tend to live approximately five years longer than those who don't, while women experience an average increase of two years. However, a substantial portion of the adult population regularly cuts their sleep short, thereby increasing their risk of various health problems, including heart attack, dementia, and diabetes. Here are what kind of vital role sleep plays in maintaining health and potentially extending lifespan.

During sleep, both the brain and body engage in crucial processes essential for overall well-being. The body basically utilizes sleep to heal and restore itself, while the immune system repairs muscles and tissues. When you sleep well your brain function is also enhanced as spaces between brain cells widen, which makes it easier to remove toxins. Moreover, sleep is essential for memory processing, consolidation, and storage. Hormones like growth hormone and testosterone are also secreted during sleep, further highlighting its importance.

While you may think that missing a few days of sleep may just make you feel sleepy, but it actually causes you to miss out on restorative time that your body needs to recover from the wear and tear of your daily activities. This significantly increases the risk of various health issues. One notable consequence is the accumulation of belly fat. Sleep deprivation interferes with hormones like leptin and ghrelin, which regulate hunger and appetite, in a research done by Mayo Clinic, it showed that participants who slept only four hours consumed 350 more calories the following day, with the excess calories being stored as visceral fat (a particularly harmful type of fat located deep within the abdomen). Sleep deprivation also leads to high blood pressure, both during the day and night, potentially accelerating the aging of the heart and blood vessels. Lack of sleep is linked to increased blood sugar levels, insulin resistance, and a higher risk of type 2 diabetes. Inadequate sleep also impairs brain function by hindering the removal of toxic byproducts, potentially increasing the risk of neurological conditions such as Alzheimer's disease.

While some people are known as "natural short sleepers," which basically means they can function in the optimal conditions on just five hours of sleep, this is a rare occurrence. Most adults require at least seven hours of sleep to feel refreshed and restored. Some people may even need more, studies have seen how teens need more sleep as they are in their formative years. Two key indicators of adequate sleep are waking up naturally without an alarm clock and feeling rested throughout the day. If an alarm is consistently needed or daytime sleepiness is present, it suggests a need for more sleep.

As people age, their sleep patterns change naturally. As the pineal gland starts producing less melatonin, which is the hormone that regulates sleepiness and also leads to less deep sleep and more light sleep. You may have noticed how older people seem to wake up early and easily, that is because of the circadian rhythm, which is the body's internal clock, may also shift, causing earlier bedtimes and wake-up times. While these changes are normal, it's important to remember that the need for sleep (around seven hours) generally remains consistent. If older adults wake up naturally and feel rested, these age-related changes are typically not a cause for concern.

Several lifestyle changes can significantly improve sleep quality. It takes some time and consistency to make sure your sleep quality does not decline. You must sustain these habits and keep a healthcare professional in the loop in case you are failing to do some things or finding it difficult.