About one-third of a person's life is spent in sleep. How much sleep does a person have every day? This changes with age. First of all, the age characteristics of sleep are very obvious. People of different ages have different needs for sleep, and they are also different among different individuals of the same age. In order to restore physical and mental strength, as well as the growth and development of children's body and mind, sleep time must be guaranteed; However, the change law of sleep with age is that with the increase of age, the demand for sleep gradually decreases. However, under the background of high pressure and rapid development of modern life, more and more people are facing insomnia. So what is the cause of insomnia?

Related factors that are easy to cause insomnia:

1. Endogenous factors: including physiology and psychology, subjectivity, trauma, obstructive sleep apnea syndrome, central sleep apnea syndrome, central alveolar hypoventilation syndrome, restless legs and periodic limb movement disorder.

2. Exogenous factors: including poor sleep hygiene, environment, plateau, lack of regulated sleep, forced sleep, sleep-related disorders, food allergies, hypnotic drug dependence, stimulant dependence and toxin induction.

3. Circadian rhythm disorder factors: including time difference change, shift work, sleep awakening rhythm disorder, sleep phase delay, sleep phase advance, etc.

4. Mental illness: including emotional disorder, anxiety, panic, amazing schizophrenia, personality disorder, somatoform disorder, etc.

5. Nervous system diseases: including brain degenerative diseases, dementia, Parkinson's disease, sleep-related headaches, etc.

6. Other physical diseases: including nocturnal myocardial ischemia, chronic obstructive pulmonary disease, sleep-related asthma, hyperthyroidism, AIDS, etc.

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These are basically factors that lead to insomnia, so if you want to eliminate the causes, insomnia can only be improved by removing physical diseases, mental and psychological diseases or environmental problems that lead to insomnia.