Can autism be inherited from a parent?

PostedNovember 18, 2025

UpdatedNovember 18, 2025

ByMy Patient Advice

Author: Lucia Alvarez, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

Yes, current research strongly supports the idea that autism heredity plays a major role in how the condition is passed on. While autism is not guaranteed to be inherited, there is a strong familial link, especially when one or both parents carry traits linked to the spectrum. This does not mean that parents are responsible for causing autism, but rather that parental genetics contribute to the chances.

Autism is a complex condition, and scientists have identified hundreds of genes that may influence how it develops. In some cases, these genes are inherited directly from a parent. In others, spontaneous changes in the genetic code can occur early in development. Together, these factors shape what is often referred to as hereditary autism.

Signs of Heredity in Families

Here are two ways autism heredity may appear in families, and how support can make a difference:

Parents with undiagnosed autistic traits

Sometimes, a parent may share communication preferences, social differences or sensory sensitivities similar to their autistic child, even if they have never been formally diagnosed. CBT can support both adults and children in recognising and managing these shared patterns.

Multiple diagnoses in one family

It is common for siblings or even cousins to receive autism diagnoses within the same extended family. This suggests a strong familial link, where parental genetics increase the likelihood of passing on certain neurodevelopmental traits. Early screening and tailored educational support are key tools in navigating this.

Recognising these links helps families understand that autism heredity means the condition often runs in genes, not in parenting styles or choices, guiding early support and easing misplaced guilt. Visit providers like Autism Detect for personal consultations and further guidance on screening and support.

For a deeper dive into the science, diagnosis and full treatment landscape, read our complete guide to Genetic Influences.

Lucia Alvarez, MSc

Author

Lucia Alvarez is a clinical psychologist with a Master’s in Clinical Psychology and extensive experience providing evidence-based therapy and psychological assessment to children, adolescents, and adults. Skilled in CBT, DBT, and other therapeutic interventions, she has worked in hospital, community, and residential care settings. Her expertise includes grief counseling, anxiety management, and resilience-building, with a strong focus on creating safe, supportive environments to improve mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy.

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy.