If you have ever wondered, Why does my brain work this way? Did I do something wrong? Did my mother do something wrong? — please hear this gently, my dear sister: ADHD is overwhelmingly a brain-based, biological condition. It is not caused by sugar, by phones, by laziness, or by how you were raised. The science has been very consistent on this for decades.
Like most things about the human person, the causes are layered. Researchers describe ADHD as multifactorial — meaning several factors come together to shape who develops it. Let us walk through what the research actually says.
ADHD is one of the most heritable conditions in all of psychiatry. Twin and family studies, conducted across many countries and decades, consistently estimate the heritability of ADHD at 74–80%. To put that in perspective: that is roughly as heritable as height.
This is why ADHD often runs in families. If a parent or sibling has ADHD, the chance that another close family member also has it is significantly higher than in the general population. Many sisters realise they have ADHD only after one of their own children is diagnosed — and looking back, they suddenly understand a lifetime of struggling.
There is no single "ADHD gene." Instead, many genes — each with a small effect — combine together to shape vulnerability. This is normal for almost every complex human trait.
Important: Heritable does not mean destined. Having the genes does not guarantee ADHD will fully develop, and not having a family history does not rule it out.
Neuroimaging studies — meaning brain scans — have shown real, measurable differences in the brains of people with ADHD. These include:
This last point is important. For many children with ADHD, the brain "catches up" in adolescence or adulthood — which is part of why some people seem to "grow out of" ADHD, while others continue to live with it. Around 55–66% of children with ADHD continue to have it as adults.
These differences are not signs that something is "wrong" with the brain. They are signs that the brain is organised differently — with real strengths and real challenges.
Some factors during pregnancy and early childhood have been linked to a slightly higher chance of developing ADHD, including:
These are statistical associations, not guarantees. Many children exposed to these factors never develop ADHD, and many children with ADHD had none of these exposures.
Because so much misinformation exists, this part matters. According to NIMH, the CDC, and decades of research:
Knowing the causes of ADHD is not about blame — it is about freedom from blame. No one chose this. Not you. Not your mother. Not your child if she or he has it too. The condition is real, the brain differences are real, and the gentleness we offer ourselves should also be real.
The research also tells us something hopeful: even though the underlying brain wiring is set, how a person lives with ADHD is shaped powerfully by environment, support, treatment, and self-understanding. A child with ADHD who is understood, supported, and gently accommodated grows differently than a child who is constantly told she is lazy or broken. The same is true for an adult.
Allah created you with a measure that He saw fit. The Quran reminds us, "Allah does not burden a soul beyond what it can bear" (Quran 2:286). Your brain — exactly as it is — is the brain Allah trusted you with. The challenges are real, the help is real, and so is the dignity of walking this path with care for yourself, bidhnillah.
May Allah make every sister who lives with ADHD feel seen, supported, and at peace with the way she has been made.