Insomnia is a very unpleasant disorder that affects not only the night sleep, but also your daytime activity. We have collected some interesting facts about insomnia you probably have never heard of.

Insomnia is…

According to Wikipedia insomnia, also known as sleeplessness, is a sleep disorder where people have trouble sleeping. They may have not only difficulty falling asleep, but also frequent awakenings during the night or early morning awakening. Usually insomnia is followed by the feeling of weakness and fatigue during the daytime, irritability and a depressed mood throughout the day.

Insomnia affects every fifth person

About 20% of the population of the globe suffer from insomnia, and this figure reaches 50-60% among the elderly.

According to a scientific research, people who are over 55 years suffer from sleeplessness because their bodies do not produce melatonin no more — the hormone that regulates cycles of sleep and wakefulness.

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Primary and secondary insomnia

Insomnia can be primary, when doctors cannot determine the cause of it because it appeared independently, and secondary, when insomnia is the result of other diseases. There are about 50 causes of secondary insomnia.

Short and long

There are three types of insomnia: transient, acute and chronic insomnia. Transient insomnia lasts for no more than a week. It can be caused by the changes in the sleep environment or by sudden stress. Acute insomnia is the inability to sleep well for about less than a month, when it is hard to fall asleep or the sleep itself is not refreshing and of poor quality. Chronic insomnia lasts for more than a month, it can be either a primary disorder or a result of another disorder. Its consequences may include mental fatigue, hallucinations, muscular weariness. Sometimes chronic insomnia can cause double vision.

Men vs. Women

It is a surprising fact that older women suffering from insomnia often have trouble falling asleep, while older men who suffer from it usually wake up at night or early in the morning and are unable to go back to sleep.

Women’s issue

Women suffer from insomnia almost as twice as more often than men. Scientists report that it is connected with the changes in the hormonal status of the female body, such as, for example, menstrual cycle, menopause or pregnancy.



Insomnia not just reduces the quality of life. Chronic insomnia is a leading cause of diseases such as a stroke, heart failure, coronary heart disease, diabetes, metabolic syndrome, depression, memory loss. What is more, sleeplessness worsens arterial hypertension.

Insomnia day and night

The most important criterion in the diagnosis of insomnia is its impact on daytime wakefulness. If a person does not have any problems associated with poor sleep during the daytime (e.g. sleepiness, impaired concentration and memory, a depressive mood etc.), it means that his sleep is normal, and the feeling of insomnia is due to something else.