You know lack of sleep can make you grumpy and foggy.
You may not know what it can do to your sex life, memory, health, looks, and
even ability to lose weight. Here are 10 surprising -- and serious -- effects
of sleep loss.
1. Sleepiness Causes Accidents
Sleep deprivation was a factor in some of the biggest
disasters in recent history: the 1979 nuclear accident at Three Mile Island,
the massive Exxon Valdez oil spill, the 1986 nuclear meltdown at Chernobyl, and
others.
But sleep loss is also a big public safety hazard
every day on the road. Drowsiness can slow reaction time as much as driving
drunk. The National Highway Traffic Safety Administration estimates that
fatigue is a cause in 100,000 auto crashes and 1,550 crash-related deaths a
year in the U.S. The problem is greatest among people under 25 years old.
Studies show that sleep loss and poor-quality sleep
also lead to accidents and injuries on the job. In one study, workers who
complained about excessive daytime sleepiness had significantly more work
accidents, particularly repeated work accidents. They also had more sick days
per accident.
2. Sleep Loss Dumbs You Down
Sleep plays a critical role in thinking and learning.
Lack of sleep hurts these cognitive processes in many ways. First, it impairs
attention, alertness, concentration, reasoning, and problem solving. This makes
it more difficult to learn efficiently.
Second, during the night, various sleep cycles play a
role in “consolidating” memories in the mind. If you don’t get enough sleep, you
won’t be able to remember what you learned and experienced during the day.
3. Sleep Deprivation Can Lead to Serious Health
Problems
Sleep disorders and chronic sleep loss can put you at
risk for:
Heart disease, Heart attack, Heart failure, Irregular
heartbeat, High blood pressure, Stroke, Diabetes
According to some estimates, 90% of people with
insomnia -- a sleep disorder characterized by trouble falling and staying
asleep -- also have another health condition.
4. Lack of Sleep Kills Sex Drive
Sleep specialists say that sleep-deprived men and
women report lower libidos and less interest in sex. Depleted energy,
sleepiness, and increased tension may be largely to blame.
For men with sleep apnea, a respiratory problem that
interrupts sleep, there may be another factor in the sexual slump. A study
published in the Journal of Clinical Endocrinology & Metabolism in 2002
suggests that many men with sleep apnea also have low testosterone levels. In
the study, nearly half of the men who suffered from severe sleep apnea also
secreted abnormally low levels of testosterone during the night.
5. Sleepiness Is Depressing
Over time, lack of sleep and sleep disorders can
contribute to the symptoms of depression. In a 2005 Sleep in America poll,
people who were diagnosed with depression or anxiety were more likely to sleep
less than six hours at night.
The most common sleep disorder, insomnia, has the
strongest link to depression. In a 2007 study of 10,000 people, those with
insomnia were five times as likely to develop depression as those without. In
fact, insomnia is often one of the first symptoms of depression.
Insomnia and depression feed on each other. Sleep
loss often aggravates the symptoms of depression, and depression can make it
more difficult to fall asleep. On the positive side, treating sleep problems
can help depression and its symptoms, and vice versa.
Source:
http://yourhealthylifeglobe.blogspot.com
Source:
http://yourhealthylifeglobe.blogspot.com
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