The causes of insomnia can be many but here some of them:
- Life events such as fear, stress, anxiety, emotional or mental tension, work problems, financial stress, etc.
- Mental disorders such as bipolarity, depression, anxiety, schizophrenia, dementia, or ADHD.
- Disturbances of the circadian rhythm, such as shift work and jet lag.
- Use of stimulants, including certain medications, herbs, caffeine, nicotine, cocaine, or excessive alcohol intake.
- Physical exercise