Genetics & Sleepwalking

Discover how your genes may influence your risk of sleepwalking. This page explores the hereditary aspects of sleepwalking, current scientific research, and how family history plays a role in nighttime wandering. Understanding the genetic connection can help shed light on patterns within families and open doors to better management and awareness.

How Genetics Contribute to Sleepwalking

Sleepwalking often runs in families. Studies have shown that individuals with a first-degree relative who sleepwalks are significantly more likely to exhibit the behavior themselves. While the exact genetic mechanisms are still being researched, sleepwalking appears to have a strong hereditary component linked to brain arousal thresholds and sleep cycle regulation.

What the Research Says

Genetic studies, including twin studies and family tracking, indicate that sleepwalking is more common among individuals with a family history of parasomnias. Researchers have identified specific gene variants and patterns that may contribute to disrupted slow-wave sleep and reduced cortical arousal, both of which are associated with sleepwalking episodes. While genetics don’t guarantee sleepwalking, they significantly raise the risk.

Genetics-Related Triggers for Sleepwalking

Inherited traits can increase vulnerability to triggers that lead to sleepwalking. These triggers often interact with environmental or lifestyle factors, setting off episodes in genetically predisposed individuals.

Family History

Having one or both parents with sleepwalking history raises your likelihood significantly.

Shared Sleep Disorders

Conditions like night terrors or sleep apnea often run in families and correlate with sleepwalking.

Neurological Sensitivity

Genetically linked brain responses may affect how the brain transitions between sleep stages.

Delayed Brain Maturation

Children with slower neural development (often hereditary) may experience more episodes.

Sleep Instability

Inherited patterns of fragmented or restless sleep may trigger sleepwalking events.

Emotional Reactivity

High stress reactivity, sometimes genetic, can influence sleep quality and behavior.

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DID YOU KNOW

Sleepwalking in numbers

Sleepwalking affects both children and adults, often running in families. Linked to mental health and long-term persistence, it’s more common than many realize and deserves better awareness and support.

Eyes Open, Mind Asleep

Sleepwalkers often navigate familiar spaces without being aware.

Deep Sleep Trigger

Most episodes begin during the deepest stage of sleep.

Episodes Vary in Length

Sleepwalking can last a few seconds—or up to 30 minutes.

Waking Is Safe

It’s okay to wake a sleepwalker—they may just be a bit disoriented.

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Sleepwalking more common in kids

Children vs Adults 

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Kids sleepwalk when both parents do

Family Connection

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Higher odds in people with depression

Experienced Doctor

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Adults report 5+ years of episodes

Chronic Cases 

EXPERTS’ POINT OF VIEW

What Experts Say About Sleepwalking

Experts from various fields share their insights on sleepwalking, its causes, risks, and effective treatments, helping to raise awareness and improve understanding of this complex condition.

"Generally sleepwalking is pretty harmless, but it can occasionally result in injury to the sleepwalker or possibly those close to them, and for some people, it can be a big problem.”

Clinical Psychologist & Sleep Researcher

"20% of children and 2-3% of adults have some form of abnormal night-time behaviour although many people do not go to their GP about this. Often simple advice and time is all that is needed."

Consultant Neurologist & Sleep Specialist

“Sleepwalking and sleep talking are often regarded as punch lines pulled straight from a sitcom... But these behaviors are no joke.”

Sleep Medicine Specialist, Mass Eye and Ear

“Sleep doesn’t come naturally to everyone and that’s okay. What matters most is seeing the signs and doing something about it ASAP.”

Clinical Psychologist & Sleep Specialist

FAQS

Frequently Asked Questions About Genetics and Sleepwalking

Explore commonly asked questions about the genetic connection to sleepwalking and how family history may affect the condition.

Yes, sleepwalking often runs in families. Genetics can significantly increase risk.

No single gene has been identified, but several genetic markers are under study.

You’re more likely to sleepwalk, but it's not guaranteed. Other factors matter too.

Yes, children with a family history are at higher risk, especially during development.

In many cases, yes. Children may outgrow it, although it can persist into adulthood.

Often, yes. Twin studies show a strong genetic component to sleepwalking.

Currently, there are no routine genetic tests, but research in this area is ongoing.