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Do genetic factors contribute to the higher prevalence of ADHD in males? 

PostedAugust 19, 2025
UpdatedSeptember 4, 2025
ByMy Patient Advice

Yes, genetic research points to sex-linked influences in ADHD gender prevalence genetics, helping explain why males are diagnosed more often than females. While ADHD affects both sexes, males are roughly twice as likely to receive a diagnosis, and differences in genetic expression and inheritance patterns likely contribute to this disparity. 

Understanding these genetic dynamics sheds light not only on prevalence statistics, but also on how ADHD may present differently between boys and girls. 

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Why genetics may skew ADHD toward males 

These key genetic factors help explain the higher rates in boys. 

Sex-linked traits and genetic expression 

Some ADHD-related genes are located on the X chromosome, where males (with one X) lack a backup copy if a harmful variant is present. This imbalance can increase male risk and make symptoms more likely to emerge or be detected early in boys. 

Hereditary bias in genetic studies 

Research indicates that familial ADHD cases, especially on the maternal side, often pass on stronger genetic risk to sons than daughters. This hereditary bias may result from differences in gene regulation or epigenetic factors tied to sex-specific biology. 

These insights into ADHD gender prevalence genetics support more nuanced assessment practices and highlight why tailored screening may be key for girls. Visit providers like ADHD Certify for gender-aware evaluations and care approaches. 

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

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Lucia Alvarez, MSc, author for my patient advice - mypatientadvice.co.uk

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, author and a reviewer for my patient advice - mypatientadvice.co.uk

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. 

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