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What prenatal factors affect ADHD epigenetics? 

PostedOctober 8, 2025
UpdatedOctober 10, 2025
ByMy Patient Advice

Research into prenatal ADHD epigenetics is uncovering how a mother’s environment and health during pregnancy can leave lasting biological marks on her child’s brain development. These marks, known as epigenetic changes, do not alter the DNA itself but can affect how genes are expressed, influencing a child’s risk for ADHD later in life. 

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How pregnancy shapes foetal brain development 

Pregnancy influences foetal brain development through maternal nutrition, hormones, and environmental factors, shaping neural circuits. 

Maternal stress  

Chronic stress during pregnancy has been linked to changes in DNA methylation in genes related to emotional regulation and attention. This may heighten vulnerability to ADHD, especially when combined with genetic risk factors. 

Nutrition and deficiencies 

 Low levels of folate, omega-3 fatty acids, and vitamin D during pregnancy can disrupt brain development and influence the epigenetic programming of neural pathways involved in attention and impulse control. 

Exposure to toxins 

Environmental exposures such as tobacco smoke, alcohol, air pollution, or endocrine-disrupting chemicals can lead to epigenetic alterations in foetal genes critical for brain growth and dopamine regulation. 

Maternal inflammation and infections  

Illnesses or inflammatory conditions during pregnancy can also impact the foetal epigenome, potentially triggering atypical neural development linked to ADHD traits. 

Why this matter 

Understanding how prenatal factors shape the ADHD epigenome can support early intervention strategies, from improving maternal nutrition and reducing stress to strengthening prenatal care policies. It also highlights the importance of a supportive, low-toxin environment during pregnancy as part of ADHD risk prevention. 

Visit providers like ADHD Certify for personal consultations that factor in prenatal and epigenetic influences. 

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

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Victoria Rowe, MSc, author for my patient advice - mypatientadvice.co.uk

Victoria Rowe, MSc

Author

Victoria Rowe is a health psychologist with a Master’s in Health Psychology and a BS in Applied Psychology. She has experience as a school psychologist, conducting behavioural assessments, developing individualized education plans (IEPs), and supporting children’s mental health. Dr. Rowe has contributed to peer-reviewed research on mental health, including studies on anxiety disorders and the impact of COVID-19 on healthcare systems. Skilled in SPSS, Minitab, and academic writing, she is committed to advancing psychological knowledge and promoting well-being through evidence-based practice.

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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