Every April, Autism Acceptance Month invites us to pause, listen, and learn not only about the children who receive applied behavior analysis (ABA) therapy, but also about the adults who are navigating the world on the autism spectrum. At Maxim Healthcare’s behavioral division (“Maxim Behavioral”), we believe that understanding does not stop at childhood, and neither does our commitment to support.
More than ever before, we are beginning to understand what it looks like to grow older with autism spectrum disorder (ASD). The first generation of children formally diagnosed with ASD in the 1990s is now reaching their 30s and beyond. That shift, a shift from children’s services to adult life, is one of the most significant and underexplored experiences in the autism community today.
This blog takes a close look at aging with Autism: what the research tells us, what unique challenges adults with ASD face, and how families, communities, and behavioral health providers can offer meaningful support at every stage of life.
What does aging with Autism look like?
Autism is a lifelong condition. The developmental and behavioral supports that help a child build communication skills, navigate social situations, and manage sensory sensitivities do not become unnecessary simply because that child turns 18 or 21. Yet for many adults with ASD, services and structured support can drop off dramatically at that point. Researchers and advocates often refer to this as the “services cliff.”
According to a 2024 review published in Healthcare, outcomes for autistic older adults are generally marked by increased medical conditions, limited physical activity, elevated risk of cognitive decline, and reduced social participation. This is not an inevitability. It is a call to action.
Research also suggests that the sheer number of adults with ASD is growing. The U.S. Centers for Disease Control and Prevention (CDC) estimates that approximately 2.21 percent of adults in the United States are on the autism spectrum, representing about 5.4 million people. As diagnosis rates for children have risen, so too will the population of autistic adults in the decades ahead.
The “services cliff”: losing support at adulthood
One of the most significant transitions a person with ASD and their family faces is the shift out of school-based services. In the United States, individuals with ASD are eligible for school-based special education services through age 21 under the Individuals with Disabilities Education Act (IDEA). When those services end, many families are left to navigate a fragmented adult service system on their own.
According to Autism Speaks, between 70,700 and 111,600 individuals age out of school-based autism services every year. The A.J. Drexel Autism Institute has reported that 87 percent of adults with ASD live with their parents at some point between high school and their early 20s. This is a far higher rate than the general population.
The transition is not only logistical; it is deeply personal. The structure, relationships, and routine that school provides can be profoundly stabilizing for individuals with ASD. When that structure disappears, many adults experience increased anxiety, social isolation, and a loss of daily purpose. Early planning, beginning years before the transition, is widely recognized as essential to bridging this gap.
Co-occurring conditions: a growing concern with age
Adults with ASD are significantly more likely than the general population to live with co-occurring mental health and physical health conditions. Understanding these conditions and how they interact with ASD is essential for comprehensive, compassionate care.
Mental health
A landmark meta-analysis published in The Lancet Psychiatry found that individuals with ASD experience elevated rates of many co-occurring conditions. The research found pooled prevalence estimates of 28 percent for attention-deficit/hyperactivity disorder (ADHD), 20 percent for anxiety disorders, and 11 percent for depressive disorders among people with ASD. Each figure is significantly higher than in the general population. Researchers note that these co-occurring mental health conditions can increase the possibility of worse long-term outcomes, including increased mortality risk.
Research from Frontiers in Psychiatry similarly estimates that nearly 70 percent of people with ASD experience at least one co-occurring psychiatric disorder, while nearly 40 percent may live with two or more. These figures underscore the importance of holistic care that addresses the whole person. This includes addressing more than just behavioral goals.
Physical health and cognitive changes
A 2025 study published in JAMA Network Open examined the prevalence of dementia among U.S. adults with ASD, raising important questions about the relationship between aging, cognitive health, and Autism. While ASD itself is not a progressive neurological condition, some adults with ASD may experience age-related cognitive changes that can affect memory, executive functioning, and daily independence. These changes deserve careful monitoring and tailored support.
Gastrointestinal issues, sleep disturbances, and sensory sensitivities, all common among individuals with ASD, can also become more complex to manage in adulthood, particularly when healthcare providers may have limited experience recognizing and treating these conditions in the context of Autism.
Employment and independent living
Employment and independent living are two of the most consequential, and often most challenging, aspects of adult life for individuals with ASD. Research in this area paints a nuanced picture.
Approximately 36 percent of autistic adults engage in competitive employment or education. However, this figure varies significantly based on support needs, communication abilities, and access to vocational training. Common barriers to employment include difficulty navigating the interview process, sensory sensitivities in the workplace, challenges with unwritten social rules, and a lack of understanding from employers about autism-related needs.
Independent living is equally complex. Studies have found that as few as 5 percent of autistic adults live fully independently, compared to approximately 66 percent of their non-disabled peers. While some individuals with ASD thrive in independent settings, particularly those with strong communication skills and access to support services, many require ongoing assistance with daily living tasks such as meal preparation, financial management, transportation, and household organization.
What matters most is not whether a person lives “independently” by a conventional definition, but whether they have a life that is meaningful, safe, and aligned with their own values and goals. Behavioral support can play a powerful role in making that possible.
The role of ABA therapy across the lifespan
ABA is most often associated with early childhood intervention. The evidence base is strong. Early, intensive ABA therapy has a well-established evidence base for improving communication, social skills, and adaptive behaviors in young children with ASD. But the story does not end there.
Research from the Journal of Applied Behavior Analysis and related publications demonstrates measurable improvements in daily living skills, employment rates, and overall independence for adults who participate in ABA-based programs. ABA therapy for adults shifts its focus from developmental milestones to practical, real-world goals. This includes job training, managing finances, navigating community settings, and building meaningful relationships.
For adults, ABA therapy is deeply personalized. A Board Certified Behavior Analyst (BCBA) works collaboratively with the individual to identify goals that matter to them. These are not goals handed down from a clinical checklist. This might mean learning to use public transportation independently, developing strategies to manage workplace stress, or building the communication skills needed to advocate for one’s own needs.
Applied behavior analysis (ABA) therapy services for adults can also address challenging behaviors that may emerge or intensify during major life transitions. These may include aging out of school, starting a new job, or moving to a new living situation. Behavioral interventions in these moments can be stabilizing and transformative.
Importantly, there is no maximum age at which ABA becomes ineffective. Behavior analysts tailor their approach to the individual’s age, context, and goals, making ABA a valuable resource throughout the lifespan.
What families can do: planning for the future
Families of individuals with ASD often carry the weight of long-term planning. It can feel overwhelming. Here are several key areas to consider as a loved one with ASD approaches adulthood and beyond.
Start transition planning early
The best time to begin planning for adult services is years before those services are needed. Ideally, this begins by age 14 or 16. Transition planning should include conversations about employment goals, housing preferences, financial planning, and healthcare needs. Schools are required to include transition planning in a student’s Individualized Education Program (IEP), so families should engage actively in that process.
Explore adult service options
Adult services vary significantly by state, but may include supported employment programs, day programs, residential support, and community-based behavioral health services. Medicaid waiver programs are a common funding source for adult disability services; however, wait lists can be long, so applying early is critical.
Address mental health proactively
Given the high rates of anxiety, depression, and other co-occurring mental health conditions in adults with ASD, families should prioritize access to mental health care alongside behavioral support. Look for providers with specific experience working with autistic adults, as diagnostic and therapeutic approaches may need to be tailored.
Build a support network
Social isolation is a significant risk factor for poor outcomes in autistic adults. Families can help by fostering connections to community groups, peer networks, and autism-specific social programs. Structured social opportunities, through a job, a volunteer role, a recreational program, or a support group, provide both connection and purpose.
Plan for housing
Housing options for adults with ASD range from fully independent living to supported apartment living, group homes, and family home arrangements. The right choice depends on the individual’s support needs, preferences, and financial situation. Starting the conversation early and including the individual with ASD in that conversation is essential.
Accepting Autism at every age
Autism Acceptance Month is a reminder that acceptance is not a milestone reached in childhood and then forgotten. It is an ongoing commitment toward understanding, inclusion, and building systems that support individuals with ASD throughout their entire lives.
For too long, Autism has been framed as a children’s issue. The reality is that the majority of people with ASD are adults, and many of them are navigating a world that was not designed with their needs in mind. Changing that requires awareness, advocacy, and action. This includes families, healthcare providers, employers, communities, and policymakers.
At Maxim Behavioral, we are committed to providing compassionate, highly specialized support that meets the complex needs of individuals with ASD and offers families the understanding, guidance and uplift they deserve. If you’re looking for guidance or want to learn more about ASD supports available through Maxim, don’t hesitate to reach out to your local office for more information.
