Most of us live in a culture that glorifies busyness. We stay up late to get things done, then we get up early so we can get to work on time. We try not to think about how little sleep we’re getting, how much coffee we’re drinking, and how tired we feel. After all, thinking about it just makes us feel worse, and we feel like we can’t do anything to change the situation. We are just going to have to learn to function while sleep deprived.
Sleep deprivation, at its most basic, means not getting enough sleep. How much sleep you need will depend on who you are and how much you do in a day, but most people need between 7 and 9 hours every night in order to function well the next day. Miss out on some sleep for just a few days, and you will notice its effects.
Symptoms of Sleep Deprivation
Some symptoms of sleep deprivation are easy to spot. People who are yawning, who are having trouble staying awake in classes or in meetings, or who are always particularly moody or emotionally touchy are, quite possibly, sleep deprived.
However, there are other symptoms that can be associated with sleep deprivation, too. Sleep deprived people can be clumsy, can have trouble making decisions or consistently make poor decisions, and they may always be hungry. They may be accident prone, in their vehicles or otherwise, and they may get sick easily or have trouble getting better when they do fall ill.
All of this happens because the human body needs sleep. We are made to sleep and, when we don’t, it has consequences for how (and how well) the body functions.
Effects of Sleep Deprivation
The above-mentioned symptoms occur because of the effects of sleep deprivation on the human body. Here are just a few health issues that seem to be caused, at least in part, by a lack of sleep.
Immune System Problems
During sleep, the body produces cytokines and other substances that fight infection. When we don’t sleep enough, we don’t have enough time to produce all of these that we need. Then, when something invades the body, we can’t fight it off as effectively.
Cytokines also help fight inflammation in the body, which has been tied to heart disease, autoimmune diseases, and more. When the body isn’t producing enough of these substances, inflammation rises and the chances of developing these related conditions rise, too.
People who only sleep for a few hours every night don’t process glucose as effectively as those who sleep for at least 8 hours. Researchers don’t know exactly why this happens, but the end result is that those who only sleep a few hours are significantly more likely to develop Type 2 Diabetes.
In addition, once they wake up, people who are sleep deprived release more insulin after they eat. This messes with their blood sugar levels, causes them to store more fat and also heightens their risk of developing Type 2 Diabetes.
When your sleep, your brain rests and recovers, processing information and storing memories. When it doesn’t get a chance to do these things, it is required to function while exhausted. Thus, sleep deprivation causes you to be impatient, to have wild mood swings, and to struggle to be creative or solve problems well.
Sleep deprivation also correlates with higher levels of:
- Suicidal thoughts
- Struggles with attention and focus
- Impulsive behavior
Some hormones depend on sleep for their production and release. Testosterone is one of these. You need at least 3 consecutive hours of sleep to make enough. Since both men and women need testosterone to achieve hormonal balance, sleep deprivation can throw this off.
Children and adolescents release more human growth hormone when they sleep well. If they aren’t getting enough rest, it’s possible that their bodies won’t grow and develop as is necessary for good human functioning.