A viral video has revealed the shocking detrimental effects that sleep deprivation can have, both on your mental and physical state.

In today’s day and age, many of us are prone to going to bed later than we should or having just enough sleep to function efficiently the next day. 

With that in mind, a sleep expert has detailed the drastic consequences that sleep deprivation can have on your overall wellbeing in the short term and in the long term. 

Matthew Walker, author of Why We Sleep and professor of neuroscience and psychology at the University of California, Berkeley, explained how sleep or lack thereof can seriously impact your health. 

Firstly, an inadequate amount of sleep can affect your brain’s ability to retain memory.

“We certainly know 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 inbox of the brain shuts down and you can’t commit new experiences to memory,” he says. 

However, that’s not the worst of it. Lack of sleep can also lead your brain to develop a greater concentration of beta amyloid, a toxic protein that’s linked to Alzheimer’s disease. 

“It is during deep sleep at night when a sewage system within the brain actually kicks into high gear and it starts to wash away this toxic protein, beta amyloid,” Walker explains.

“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.”

As many may have probably guessed after suffering from the flu this winter, losing sleep is also connected with having a weaker immune system. 

“After just one night of four to five hours of sleep, there is a 70 per cent reduction in critical anti-cancer-fighting immune cells called natural killer cells,” Walker says. 

A deficient amount of sleep can increase your risk of developing bowel, prostate or bowel cancer later in life. 

So, how much time can we spend awake before we our mental and physical capabilities start to become impaired?

“Once you get past 16 hours of being awake, that’s when we start to see mental deterioration and physiological deterioration in the body,” Walker says. 

“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.

“Wakefulness essentially is low-level brain damage.”


UK Independent