Colin Snow
Sleep is an essential part of life, but some people need less of it than others. While most adults need seven or more hours of sleep each night, some people only need six or fewer hours of sleep to feel well rested. This could be due to a gene that has been identified in people who need little sleep, or a condition called Short Sleeper Syndrome (SSS). Not getting enough sleep can lead to physical and mental health problems, so it's important to understand why you might be needing less sleep.
| Characteristics | Values |
|---|---|
| Name of condition | Short Sleeper Syndrome (SSS) |
| Sleep duration | Six or fewer hours of sleep per night |
| Energy levels | High energy levels throughout the day |
| Alarm clock | No need for an alarm clock |
| Falling asleep | Easy to fall asleep at bedtime |
| Feeling well-rested | Feeling well-rested after a few hours of sleep |
| Age of onset | Childhood or adolescence |
| Gene mutation | May be caused by a specific gene mutation |
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What You'll Learn
Short Sleeper Syndrome (SSS)
People with SSS do not experience negative symptoms as a result of their reduced sleep. They may fall asleep easily when they go to bed and wake up feeling energised, even after just a few hours of sleep. They may not need an alarm clock to wake up in the morning.
The main symptom of SSS is sleeping between four and six hours each night. However, it's important to note that not everyone who sleeps for a short duration has SSS. The syndrome is specifically characterised by the absence of negative symptoms associated with sleep deprivation.
While SSS doesn't pose any known health risks, it's important to prioritise sleep hygiene and ensure you're getting enough rest. If you feel that your sleep needs are impacting your daily life, it may be helpful to consult a healthcare professional for personalised advice and guidance.
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Gene mutation
There are several gene mutations that have been linked to people needing less sleep. One of these is a mutation in the NPSR1 gene, which codes for a protein receptor in the brain known to be involved in arousal and sleep behaviour. People with this mutation have been found to feel fully rested after much less sleep than average, with some needing as little as 4.3 hours a night. Another variation in NPSR1 has previously been linked to people requiring 20 minutes less sleep than average.
A second mutation that has been identified is a rare mutation on the DEC2 transcription facilitator, which is involved in the circadian clock, among other functions. People with this mutation have been found to need just six hours of sleep a night, compared to the average of about eight hours.
It's important to note that, for most people, sleeping less than six hours a night can result in a decline in cognitive abilities within days. Over long periods, sleep deprivation can contribute to various disorders, including obesity, heart disease, high blood pressure, diabetes, and depression.
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Childhood or adolescence
Adolescents are notorious for not getting enough sleep. While the average teenager needs between 8 and 10 hours of sleep every night, most only get about 6.5 to 7.5 hours of sleep per night, and some get even less. This is because there is a biological shift in an adolescent's internal clock of about one or two hours after puberty, meaning that a teenager who used to fall asleep at 9 pm will now not be able to fall asleep until 11 pm. This also means waking up two hours later in the morning. Adolescents also develop a strong tendency towards being a "night owl", staying up later at night and sleeping longer into the morning. Experts believe this is a two-fold biological impulse affecting the circadian rhythm and sleep-wake cycle of teens.
There are several other factors that can interfere with adolescent sleep patterns. Insufficient sleep has been found to be higher among girls and people assigned female at birth. Older teens report getting less sleep than younger adolescents. Surveys have also found that teens who identify as Black, Asian, or multiracial have the highest rates of sleeping less than eight hours per night. Some teens have poor sleep because of an underlying sleep disorder. Adolescents can be affected by obstructive sleep apnea (OSA), which causes repeated pauses in breathing during sleep. OSA frequently causes fragmented sleep and excessive daytime sleepiness. Though less common, teens can have sleep disorders like restless legs syndrome, which involves a strong urge to move the limbs when lying down, or narcolepsy, which is a disorder affecting the sleep-wake cycle. Mental health conditions like anxiety and depression can also be a challenge to quality sleep in teens.
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Natural short sleepers
If you are a natural short sleeper, you may have short sleeper syndrome (SSS). This is a condition where you need less sleep than most people, usually between four and six hours each night. People with SSS do not experience negative symptoms as a result of their reduced sleep and typically feel that they have had a full night of sleep when they wake up. They also tend to have the energy they need to get through the day.
The pattern of short sleep usually begins in childhood or adolescence and continues into adulthood. Researchers believe that SSS may be caused by a specific gene mutation, although they are still studying the causes. This mutation may be what enables people to function well on fewer than six hours of sleep each night.
Short sleeper syndrome does not pose any known health risks.
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No known health risks
Short Sleeper Syndrome (SSS) is a condition where you need less sleep than most people. People with SSS sleep between four and six hours each night and wake up feeling like they've had a full night of sleep. They don't experience negative symptoms as a result of their short sleep and SSS doesn't pose any known health risks.
The pattern of short sleep usually begins in childhood or adolescence and continues into adulthood. Researchers believe it may be caused by a gene mutation, which enables people to function well on less sleep.
While there are no known health risks associated with SSS, it's important to note that sleep is crucial for the body to regenerate certain systems and carry out essential processes. Sleep deprivation can have negative consequences, but this doesn't seem to be the case for people with SSS.
If you think you may have SSS, it's always a good idea to consult with a healthcare professional to understand your specific situation and ensure there aren't any underlying issues.
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Frequently asked questions
The amount of sleep you need changes as you age, and sleep needs vary from person to person. Some people have a gene that means they need less sleep than most.
Short sleeper syndrome (SSS) is a condition where you need less sleep than most people. People with SSS typically get six or fewer hours of sleep a night and wake up feeling well rested.
Sleep deprivation can cause physical and mental health problems. You may not be getting quality sleep if you don't feel rested after a full night's sleep, you repeatedly wake up during the night, or you experience symptoms of sleep disorders, like snoring or gasping for air.
Your body needs sleep to regenerate certain systems and carry out certain processes. Not getting enough sleep can lead to health problems.
