(HealthDay News) -- If you have trouble falling or staying asleep, it's important to understand the reasons for your insomnia.
Here's a list of possible reasons for your sleepless nights, courtesy of the U.S. National Library of Medicine:
- Discomfort or illness.
- Depression.
- Stress or anxiety.
- Drinking caffeine or alcohol, smoking, or taking certain medications or illicit drugs.
- An inappropriate sleep environment, including one that's too bright or too noisy.
- Related activities that affect your sleep, such as taking naps or going to bed too early.
