Brandon Peters M.D. author of Insomnia Solved https://amzn.to/2GihowJ and speaker at Stanford University discusses the Importance of sleep in this Life Years guest article. Brandon is a leading expert in the area of sleep and one of the great minds of our time. I feel very fortunate to have him share his thoughts with all of us. Please click the link above to check out his new book. Thank you all so much for your support; both Dr. Peters and myself greatly appreciate it! Hope you enjoy this article.
Sleep: Pillar of Health and Well-being
By Brandon Peters, M.D.
Sleep is a pillar of health. With nutrition and exercise, it supports the optimal function of the body and mind. Poor sleep diminishes well-being and can precipitate and even worsen chronic medical conditions like weight gain, hypertension, and diabetes. How do sleep disorders like insomnia and sleep apnea undermine health?
The Vital Role of Sleep
In the past century, we have begun to more fully understand the importance of sleep to health. It is not a state in which the body shuts down. On the contrary, our very health is restored with sleep of sufficient quality and quantity.
There are two recognized states of sleep: rapid eye movement (REM) and non-REM sleep. REM is when the mind is active but the body remains paralyzed. Memory is consolidated. Learning is reinforced. Vivid dreams flood the mind, like movies in which you participate.
During non-REM sleep, which constitutes upwards of 3/4 of the night, the body is repaired. Growth hormone is released during slow-wave sleep. This predominates in the first few hours of the night. Physical conditioning, muscle growth, and important physical repairs occur then. Athletic performance is enhanced by adequate sleep. In addition, the brain’s tissues are cleansed as metabolic byproducts are cleared by the glymphatic system.
Sleep needs for adults range from 7 to 9 hours. Inadequate sleep can quickly lead to symptoms of sleep deprivation.
When Things Go Amiss
If you need 9 hours of sleep to feel rested, but you only get 8 hours, you will be sleep deprived. This can lead to important changes that affect health.
With acute sleep deprivation, there can be hormonal changes. Increased cortisol levels may provoke insulin resistance, contributing to high blood pressure and diabetes. Appetite-regulating hormones are disturbed. Ghrelin levels increase, stimulating appetite. Leptin levels decrease, also increasing appetite and weight gain.
Beyond the effects on weight regulation, there are other impacts. Sleep deprivation contributes to:
- Excessive daytime sleepiness
- Poor concentration
- Short-term memory problems
- Mood changes (anxiety, depression, or irritability)
- Hallucinations
- Paranoia
- Physical pain
- Poor performance, errors, and accidents
Not sleeping enough may provoke these symptoms. Unfortunately, sleep disorders may also have an impact. Insomnia and sleep apnea are two conditions that deserve special attention.
Insomnia is defined as difficulty falling or staying asleep. If it occurs at least 3 nights per week for more than 3 months, it is termed chronic insomnia. It may take someone with insomnia more than 30 minutes to fall asleep. After waking, as much time or more may be spent lying awake at night. Severe insomnia can result in hours spent tossing and turning. Some people feel like they haven’t slept at all for extended periods. Chronic insomnia may affect about 10 percent of the population. The resulting loss of sleep can contribute to the symptoms of sleep deprivation.
Obstructive sleep apnea is the other major sleep disorder that should not be overlooked. It is often associated with snoring. It may lead to fragmented sleep, undermining its quality. Witnessed pauses, gasping, excessive daytime sleepiness, frequent urination at night, teeth grinding, night sweats, and morning headaches may also be present. The condition requires testing to identify, and may be missed by the affected person and his or her bed partner. If sleep is of poor quality, no matter how much is obtained, an evaluation by a board-certified sleep physician is indicated.
Finding Solutions to Improve Sleep
Fortunately, there are ways to improve sleep to avoid the effects of sleep deprivation. Ensure that you are meeting your individual sleep needs. Protect your bedtime, go to bed feeling sleepy, spend enough time in bed to meet your sleep needs, and keep a consistent sleep-wake schedule. Try to get 15 to 30 minutes of sunlight upon awakening, every day, to reinforce your circadian pattern.
For those with insomnia, consider participating in a cognitive behavioral therapy for insomnia (CBTI) program. This 6-week education course can be guided by a psychologist, and online programs and books also exist. It is the most effective treatment for chronic insomnia and teaches a set of skills that can improve sleep for a lifetime.
If other symptoms are present, or if sleep deprivation persists, seek evaluation and testing with the help of a sleep physician. If a sleep disorder is identified, appropriate treatment may be the key to finally getting the healthful rest that your body and mind need to function at their best.
Brandon Peters, M.D., is a double board-certified neurologist and sleep medicine physician who practices at Virginia Mason Medical Center in Seattle. He is the author of Insomnia Solved https://amzn.to/2GihowJ, an online CBTI program and book available through Amazon. He is also an adjunct lecturer at Stanford University, the birthplace of sleep medicine.