The most common causes of insomnia are:
- stress, anxiety or depression
- noise
- a room that's too hot or cold
- uncomfortable beds
- alcohol, caffeine or nicotine
- illegal drugs like cocaine or ecstasy
- jet lag
- shift work
Other conditions and medicines that can cause insomnia
- mental health conditions, such as bipolar disorder
- menopause
- Medicines can also cause insomnia.
