Herbie Murray
Autism is often associated with sleep problems, with autistic people, including children, frequently experiencing difficulty falling asleep. Recent studies have examined whether sleep problems could be a precursor to autism, rather than a symptom. While the results suggest that infants who go on to be diagnosed with autism experience more sleep difficulties, it is unclear whether there is a causal relationship. However, the studies indicate that addressing sleep problems in infancy could alleviate some of the difficulties autistic children experience.
| Characteristics | Values |
|---|---|
| Sleep problems in infancy | Linked to autism later in life |
| Infant siblings of children with autism | 20% chance of developing autism spectrum disorder |
| Brain scans of infants who have autistic older siblings | Show signs of autism early in life |
| Sleep problems | May be associated with altered growth trajectory in the hippocampus |
| Irritable/over-reactive types of sleep-wake rhythms | Observed more often in ASD groups |
| Maternal lack of sleep and irregular lifestyle | Linked to an increased risk of ASD in children |
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What You'll Learn
- Sleep-wake rhythm abnormalities in newborns may be precursors to ASD development
- Brain scans of infants suggest a link between sleep trouble and autism later in life
- Autistic newborns may experience more restless sleep than other newborns
- Sleep problems in infancy could alleviate difficulties autistic children face later
- Autistic newborns may have irregular melatonin levels, causing sleep issues
Sleep-wake rhythm abnormalities in newborns may be precursors to ASD development
Sleep-wake rhythm abnormalities in newborns may be important precursors to ASD development. A 2017 study by the IBIS Network found that infants who had an autistic older sibling and showed an expanded cortical surface area at 6 and 12 months of age were more likely to be diagnosed with autism. These infants also had a higher likelihood of experiencing sleep problems.
A separate study of 305 infants, 71 of whom were later diagnosed with autism, found that those who experienced more sleep problems at 6 and 12 months had weaker social-communication skills at 24 months. This study also found that those who experienced more sleep problems during this period had more growth in the hippocampus from 6 to 24 months of age. The hippocampus is critical for learning and memory, and changes in its size have been associated with poor sleep in older children and adults.
These findings suggest that addressing sleep problems in infancy could potentially alleviate some of the difficulties faced by autistic children. However, it is not yet clear whether a causal relationship exists between sleep problems and autism. More research is needed to determine whether sleep problems contribute to brain changes and autism traits, or whether some common factor underlies both.
It is worth noting that the differences in sleep patterns between infants who later develop autism and those who do not are very subtle. Objective measures of sleep, such as sensors that track movement during sleep, may be necessary to fully understand the relationship between sleep and autism.
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Brain scans of infants suggest a link between sleep trouble and autism later in life
Sleep is critical for children and their parents, and sleep problems are an important focus for research and treatment. Researchers at the University of Washington found that sleep problems in a baby's first 12 months may precede an autism diagnosis and be associated with an altered growth trajectory in the hippocampus. In a study of more than 400 6- to 12-month-old infants, those later diagnosed with autism were more likely to have had difficulty falling asleep. This sleep difficulty was associated with altered growth trajectories in the hippocampus, a key part of the brain critical for learning and memory.
The study, published in the American Journal of Psychiatry, adds to existing research suggesting a link between sleep problems and autism. It also highlights the potential biological component to sleep issues in autistic children, as behavioral interventions don't always work. Researchers at the IBIS Network, including the University of Washington, the University of North Carolina at Chapel Hill, Washington University in St. Louis, and the Children's Hospital of Philadelphia, evaluated MRI scans of 432 infants, surveyed parents, and measured cognitive functioning.
Of the 432 infants, 127 were identified as "low risk" for autism at the time of the MRI scans due to no family history of the condition. At 24 months of age, 71 of the roughly 300 children originally considered "high familial risk" were diagnosed with autism spectrum disorder. This allowed researchers to re-examine brain scans and behavioral data, finding that sleep problems and larger hippocampi were more common among infants later diagnosed with autism. No other subcortical brain structures were affected, including the amygdala and thalamus.
The findings suggest that addressing sleep problems in infancy could help alleviate some of the difficulties autistic children experience. However, it is important to note that the differences in sleep patterns were subtle and only observed when looking at group averages across hundreds of infants. While sleep difficulties may be an early sign of increased autism risk, further research is needed to confirm this.
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Autistic newborns may experience more restless sleep than other newborns
While it is unclear whether autistic newborns sleep more than neurotypical newborns, research suggests that autistic children and infants experience more sleep disturbances than their neurotypical peers. This is supported by parental reports of more sleep difficulties in infants who later received an autism diagnosis compared to those who did not.
A 2017 study by the IBIS Network found that infants with an autistic older sibling who also showed an expanded cortical surface area at 6 and 12 months of age had a higher likelihood of receiving an autism diagnosis. These infants also experienced more sleep problems. Similarly, a 2020 study by the University of Washington found that infants who later received an autism diagnosis were more likely to have had difficulty falling asleep in their first 12 months.
Another study examined the sleep patterns and brain scans of infants with autistic older siblings, a group known as "baby sibs." They found that these infants often showed signs of autism early in life and experienced more trouble falling asleep as infants than those without autism. Among the baby sibs with autism, those with more sleep problems at 6 and 12 months had weaker social-communication skills at 24 months.
While the exact relationship between sleep disturbances and autism is not yet fully understood, it is clear that autistic newborns may experience more restless sleep than other newborns. This may be due to various factors, such as difficulties with relaxing or winding down, irregular melatonin levels, and social communication difficulties. Additionally, some autistic children take medications that can have side effects that make it harder for them to settle to sleep.
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Sleep problems in infancy could alleviate difficulties autistic children face later
Sleep problems are common in autistic children, with nearly 80% of autistic preschoolers experiencing trouble sleeping. A recent study has found that infants who go on to be diagnosed with autism at age 2 experience more trouble falling asleep than infants without autism. The study also found that those with more sleep problems at 6 and 12 months had weaker social-communication skills at 24 months.
These findings suggest that addressing sleep problems in infancy could potentially alleviate some of the difficulties autistic children face later on. However, it is important to note that the relationship between sleep troubles and autism is complex, and it is not yet clear whether sleep problems contribute to autism traits or vice versa. Further research is needed to understand the connection fully.
Autistic children can experience a range of sleep problems, including irregular sleeping and waking patterns, sleeping less than expected for their age, and engaging in activities or making noise during the night. These issues can be related to various factors, such as sensory sensitivities, social communication difficulties, anxiety, and biological causes. For example, autistic children with sensory sensitivities may struggle to sleep if their sleep environment is too hot, cold, light, or noisy. Social communication difficulties may also impact sleep, as the child may not realize it is bedtime or may be kept awake by unmet needs they cannot express.
To help autistic children with sleep problems, it is important to identify the underlying causes. Keeping a sleep diary can be a useful way to track sleep behavior and identify any patterns or environmental factors that may be affecting sleep. Once the causes are understood, parents and caregivers can work on implementing solutions, such as positive bedtime routines, regular bedtimes, healthy sleep associations, and creating a comfortable sleep environment. Lifestyle changes, such as encouraging physical activity and healthy eating habits, can also help improve sleep. In some cases, medical intervention may be necessary, such as melatonin supplements or other medications, which should be discussed with a healthcare professional.
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Autistic newborns may have irregular melatonin levels, causing sleep issues
Sleep issues are common in autistic individuals, and these problems can start in infancy. Autistic newborns may experience sleep issues due to irregular melatonin levels, which are often associated with autism spectrum disorder (ASD). Melatonin is an endogenous neurohormone predominantly produced in the pineal gland, and it affects signal transduction in ASD.
Research has found a link between abnormal melatonin concentrations and the severity of autistic behaviours. Autistic individuals often have lower nighttime melatonin levels, which can lead to difficulties with sleep onset, maintenance, and duration. These irregularities in melatonin levels can be attributed to variations in the melatonin pathway physiology, including functional and genetic differences.
The interplay between the melatonin system and the onset of autism is a subject of ongoing investigation. Studies suggest that addressing sleep problems in autistic infants may help alleviate some of the challenges they face as they grow older. However, it is unclear whether sleep disturbances contribute to autism traits or if they are a result of the condition.
Additionally, other factors can contribute to sleep issues in autistic newborns and children. These include difficulties with relaxation, anxiety, environmental factors, social communication difficulties, and unhealthy habits such as lack of physical activity and poor eating habits. In some cases, medication side effects can also make it harder for autistic individuals to settle down for sleep.
To address sleep issues in autistic newborns, parents can try establishing positive bedtime routines, regular bedtimes, healthy sleep associations, and creating a comfortable sleep environment. Keeping a sleep diary can help identify patterns or environmental factors that may be affecting the child's sleep. Consulting with healthcare professionals, such as a paediatrician or psychologist, is recommended if sleep problems persist or if there are concerns about potential medical conditions.
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Frequently asked questions
Autistic newborns may experience sleep problems and brain changes. Research has shown that infants who have trouble sleeping in the first 12 months of their lives are more likely to be diagnosed with autism later on. However, it is unclear whether sleep problems contribute to autism or vice versa.
Autistic newborns may have trouble falling asleep and staying asleep throughout the night. They may also experience short sleep hours and frequent crying.
Parents can help by establishing positive bedtime routines, regular bedtimes, healthy sleep associations, and comfortable sleep environments. It is also important to ensure that autistic newborns are getting enough physical activity during the day and are eating their evening meal at a suitable time.
Sleep problems in autistic newborns may be linked to altered brain development, specifically in the hippocampus, a key part of the brain responsible for learning and memory. Addressing sleep problems early on could potentially alleviate some of the difficulties that autistic children face.
