March 9, 2017



What happens when you go without sleep Famously, a high school student in San Diego California called Randy Gardner stayed awake for 264.4 hours in 1964 a little over 11 days. During this time, he experienced increasingly serious cognitive and mental changes, including moodiness, an inability to focus, short term memory failure, paranoia and even hallucinations.

However, after 11 days of non-stop wakefulness, he slept (understandably) for 14 hours, which returned him more or less to normal. There were no lasting consequences of a physical or psychological nature. What should one make of this One might surmise that sleeplessness can’t?be all that bad if such an extreme example gave rise to problems of such a temporary (and easily curable) nature.

Unfortunately, that is not the case. While it is true that recovering from a single, long period of sleeplessness is relatively easy and consequence free, sleep deprivation usually comes in another, less dramatic (but more problematic) form. It involves marginal sleeping habits over a long period, with successive nights of insufficient sleep accumulating over long periods of time.

A 2016 New Zealand study found that over a third of New Zealanders experienced this sort of sleep deprivation. It is not just pervasive, but also dangerous. In fact: a?lack of sleep was a major?factor in some?of the major disasters in human history, including Chernobyl, Three Mile Island and the Exxon oil’spill, among others.

Disasters aside, there are a number of ways in which insufficient sleep can undermine your mental and physical wellbeing:

Heart Disease and Stroke

A review by researchers at the UK’s University of Warwick of?15 studies containing almost 500,000 participants‘showed that sleep deprivation massively increases the likelihood of heart disease and stroke.

Immune Function

Lack of sleep also undermines our immune function, according to a study at the University of California. The authors conclude even a modest disturbance of sleep produces a reduction of natural immune responses.


Sleep has long been suspected to play a crucial role in memory consolidation, so it’s not surprising that poor sleep has been shown to impair memory consolidation.


In the famous case of Randy Gardner, sleep deprivation gave rise to?’severe moodiness? and other emotional problems. It can also become very difficult for a sleep deprived person to read emotions in others, or express their own. That a lack of sleep is emotionally difficult is not so surprising, if…

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