Can't Sleep Until 2 a.m. You May Have DSPS

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Do you ever find it hard to sleep at night, no matter how early you go to bed? You might have something called "delayed sleep phase syndrome" or DSPS. This is a problem with your body's natural 24-hour cycle, and it makes you want to sleep much later than you should. People with DSPS often have trouble falling asleep until very late, like between 2 a.m. and 6 a.m., and they find it hard to wake up in the morning. This can last for a long time, even for years, and it's common among teenagers.

Many people with DSPS say it started after staying up late for studying or parties, or after working evening or night shifts and not being able to get back to a normal sleep schedule.

A study in Norway found that about 3.3% of teenagers between 16 and 18 years old had DSPS, and it was more common in girls. People with attention-deficit/hyperactivity disorder (ADHD) also often have DSPS.

Most treatments for DSPS are about changing your behavior, like trying to keep a regular sleep schedule and waking up a little earlier each day. Doctors might also suggest sitting under bright light right after waking up to help change your sleep schedule.

Taking melatonin, a hormone that helps with our body's sleep cycle, is another treatment. Some people with DSPS might also have longer circadian periods, meaning they don't feel the need to fall asleep at the same time as most other people.


1- What is the main problem faced by people with delayed sleep phase syndrome (DSPS)?

2- How long can delayed sleep phase syndrome (DSPS) last?

3- What might be a cause of delayed sleep phase syndrome (DSPS), according to the passage?


You have completed the comprehension questions. 

Parts of this lesson are based on: An article by Mike Kanert.