22 Jun What are the effects of sleep deprivation on the body?
Well, there are many different effects! We are now aware that a lack of sleep will actually prevent your brain from being able to initially make new memories, so it’s almost as though without sleep the memory receiver of the brain shuts down and you can’t transfer new experiences to memory.
Lack of sleep has also been linked to an increased development of a toxic protein in the brain that is associated with Alzheimer’s disease! It is found that during deep sleep at night the sewage system within the brain actually kicks into gear and starts to wash away this toxic protein which is called beta-amyloid.
So if you’re not getting enough sleep each and every night, more of that Alzheimer’s-related protein will build up. The more protein that builds up, the greater your risk of going on to develop dementia in later life.
There are a variety of effects that sleep deprivation can have on the body. For example let’s start with the reproductive system…
- Were you aware that men who are sleeping for just five to six hours a night have a level of testosterone which is that of someone ten years their senior. So a lack of sleep will age you by almost a decade in terms of that aspect of virility and wellness.
- Women who have trouble sleeping or are shift workers often have poor melatonin levels and therefore find it more difficult to fall or pregnant and even conceive.
- After just one night of less than 5 hours sleep, there is a 70% reduction in critical anticancer fighting immune cells called natural killer cells.
- You are less likely to be able to fight infection if your sleep quality is poor.
Did you realise that if you had a week of poor quality sleep before a flu vaccination that the injection would only be 50% effective! Crazy!!!
- During your deep REM sleep at night you receive the most benefical form of blood pressure medication. Your heart rate drops, your blood pressure goes down.
- If you’re not getting sufficient sleep, you’re not getting that reboot of the cardiovascular system, so your blood pressure rises. You have, if you’re getting six hours of sleep or less, a 200% increased risk of having a fatal heart attack or stroke in your lifetime.
- When we lose one hour of sleep when daylight savings starts there have been studies to show that there is a subsequent increase of 24% in heart attacks the following day, and when it goes back to normal, we then see a 21% decline.
Have you ever wondered how long you can actually last without sleep before we start to see declines in brain function or even impairments within your body? The answer seems to be about 16 hours of wakefulness.
Once you get past 16 hours of being awake, that’s when we start to see mental deterioration and physiological deterioration in the body. We know that after you’ve been awake for 19 or 20 hours, your mental capacity is so impaired that you would be as deficient as someone who was legally drunk behind the wheel of a car. So if you were to ask me what is the recycle rate of a human being, it does seem to be about 16 hours and we need about 7.5 hours of sleep to repair the damage of wakefulness. Wakefulness has been reported to essentially be low-level brain damage!