What are the various causes of insomnia?

Insomnia is a sleep disorder defined as the inability to sleep satisfactorily or to have any sleep at all. It is characterized by restlessness, sleep interruptions, a decreased in normal sleeping time, or, at worst, complete wakefulness.

Aside from the frustration that insomnia can cause its sufferers, this sleep disorder causes those afflicted to lack enthusiasm and energy, have memory and concentration problems, feel lethargic, frustrated and sleepy during the day. Worst case scenarios that may be brought on by insomnia are being prone to accidents, reduced work productivity and the aggravation of psychological and medical conditions.

So what exactly are the culprits that make insomnia such a frustrating sleeping problem?

1. Emotional Distress

Especially when it is from internalised anxiety, anger, worry or stress. These emotional problems frequently trigger insomnia

2. Substance Abuse

Drinking too much coffee, tea, colas or other "energy-upper drinks" is known to cause insomnia. Caffeine from these drinks is the main reason. Smokers can also be easy victims of insomnia because of the nicotine that cigarettes contain. Alcohol and certain medications can also make us prone to becoming insomniacs. Many people believe that alcohol, can make us feel drowsy. But when the alcohol gets metabolised in the system it can cause us to wake up suddenly in the early hours of the morning.

3. Circadian Disturbance.

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