Autistic people are more likely to die prematurely than non-autistic people.
That sentence should stop us in our tracks.
There is no single reliable figure for the life expectancy of autistic Australians. The available evidence varies depending on the population studied, whether people have an intellectual disability, their sex, their level of support need and the presence of co-occurring health conditions. However, systematic reviews consistently show that autistic people experience substantially higher mortality than the general population. Across many studies, the risk of death is at least twice as high.
This is not because autism is inherently fatal.
Autistic people are dying too young because physical illness is missed, healthcare remains inaccessible, mental health needs go unsupported and daily life often demands more than their nervous systems can sustainably carry. The life expectancy gap is not simply a feature of autism. It reflects the conditions autistic people are expected to live within.
The Causes Are Bigger Than Autism
Premature mortality among autistic people does not have one single cause.
Research has identified elevated deaths associated with neurological conditions, particularly epilepsy, as well as respiratory disease, cancer, cardiovascular conditions and external causes such as injury. Intellectual disability, complex communication needs and other co-occurring conditions can increase the risk further.
However, the presence of a health condition does not fully explain the gap. Autistic people also face substantial barriers when trying to access healthcare.
An Australian study involving 263 autistic adults found that participants reported an average of 4.58 healthcare barriers, compared with only 0.76 among non-autistic adults. These barriers included communication difficulties, anxiety, sensory environments, planning demands and inadequate professional understanding of autism.
For some autistic people, booking an appointment is difficult. For others, waiting rooms, fluorescent lighting, unpredictable delays or rushed communication make the appointment itself overwhelming. Some people struggle to identify or describe symptoms. Others have previously been dismissed, misunderstood or treated as though every concern is caused by autism.
When healthcare itself is inaccessible, people may delay seeking help. Symptoms can be overlooked, communication can break down and manageable conditions can become much more serious before they are treated.
We Need to Talk About Suicide
Any honest discussion of autistic mortality must include suicide.
A 2024 systematic review involving more than 10 million people found that autistic people were almost three times more likely to die by suicide than non-autistic people. Among autistic people without intellectual disability, the reported risk was more than five times higher.
These figures are confronting, but they should not be interpreted as evidence that autism itself causes suicide.
Autistic people frequently experience bullying, social exclusion, unemployment, financial insecurity, loneliness, unmet support needs and intense pressure to mask their natural communication and behaviour. Many also struggle to access mental healthcare that understands autism and adapts support appropriately.
The cumulative impact matters. A person who has spent years trying to appear acceptable, suppressing their needs and repeatedly being misunderstood may reach a point of profound exhaustion and hopelessness.
Suicide risk does not exist outside these conditions. It develops within lives shaped by chronic stress, disconnection and systems that repeatedly fail to respond. Addressing suicide risk therefore requires more than crisis intervention. It requires safer environments, accessible mental healthcare, meaningful connection and earlier support.
Daily Life Is a Health Issue
Health is not limited to medical appointments or test results.
It is also shaped by whether someone can sleep, eat regularly, manage medication, attend appointments, move their body, maintain relationships and recover from daily demands.
Executive dysfunction can make booking a GP appointment feel almost impossible. Interoceptive differences can delay awareness of pain, fatigue or illness. Sensory overload can make clinics intolerable. Autistic burnout can disrupt cooking, hygiene, exercise, medication routines and the ability to advocate for help.
These are occupational issues, but they are also health issues.
A person may understand exactly what they need to do to support their health and still be unable to complete the sequence required to do it. They may need to locate a suitable provider, make a phone call, explain their symptoms, travel to the appointment, tolerate the environment, remember the advice and then implement a new routine afterwards.
When daily life becomes unsustainable, long-term health becomes harder to protect.
How Occupational Therapy Can Help
Occupational therapy cannot solve structural inequality or remove every health risk. It can, however, help autistic people build practical systems that make health and healthcare more accessible.
This may involve developing sustainable sleep and meal routines, creating medication systems, preparing written communication for appointments, planning healthcare visits and identifying sensory accommodations.
It may also involve reducing the executive demands involved in accessing care. An occupational therapist might help someone break an appointment into manageable steps, create reminders, identify telehealth options or develop a plan for recovery afterwards.
Occupational therapy can also support boundaries, communication, sensory modulation, meaningful participation and recovery from burnout. These are not separate from physical health. They influence whether someone has enough capacity to maintain routines, seek help and remain connected to the people and activities that protect wellbeing.
The goal is not to make autistic people better at tolerating harmful conditions.
The goal is to make everyday life more sustainable and help people access support before they reach crisis.
Autistic people do not need to be frightened by mortality statistics. They need governments, health professionals and support systems that take those statistics seriously.
If your health routines, energy or access to healthcare have become difficult to manage, this is something we can explore through neuro-affirming occupational therapy. I work with autistic adults via telehealth across Australia to build practical systems that support health, participation and a more sustainable life.
