Causes of Insomnia
1. Lifestyle habits: Consuming caffeine-containing beverages, smoking, drinking alcohol before bedtime, irregular sleep schedules, or shift work can all affect sleep.
2. Environmental factors: Noise, light, odors, overly soft or hard mattresses, extreme indoor temperatures, bites from mosquitoes, flies, or lice—all can interfere with sleep.
3. Physiological factors: More than half of chronic insomnia patients suffer from primary sleep disorders, including breathing difficulties and intermittent muscle twitching during sleep. Other physical conditions such as arthritis, heartburn, menstrual headaches, hunger, overeating, bloating, frequent urination, coughing, pain, and other discomforts may also cause insomnia.
4. Psychological factors
Insomnia is closely related to many underlying psychological factors. Tension, anxiety, depression, and others can trigger insomnia. Common psychological factors include:
① Fear of insomnia is one of the most common causes of insomnia.
② Overly focusing on falling asleep makes it harder to fall asleep.
③ Inappropriate daytime coping strategies, such as trying to catch up on sleep during the day after insufficient nighttime sleep, often worsen sleep quality.
④ Conditioned insomnia—such as repeatedly hearing a ticking alarm clock during insomnia, leading each tick to feel like a reminder: “Another second without sleep.”
⑤ Projection of daytime emotional frustration. If one is emotionally distressed during the day, this state may persist into a state of wakeful rumination at night.
⑥ Crisis in social achievement values. Loss of daily satisfaction or sense of accomplishment can also impair sleep.
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