Primary causes of insomnia include:
1. Stress
2. Excessive noise, light, or temperature
3. Changes to your sleep schedule like jet lag, a new shift at work, or bad habits you picked up when you had other sleep problems
4. Genes can cause this sleep problem
Some Secondary Causes Include:
1. Depression or Anxiety
2. Caffeine, tobacco, or alcohol use
3. Pregnancy
4. Alzheimer’s disease