Did you know that ADHD is highly hereditary?

One of the things that often surprises people most after a later diagnosis of ADHD is not just what they begin to understand about themselves, but what they start to notice when they look at their family through a different lens. For many women, especially those who are diagnosed in midlife, there comes a quiet but powerful moment when they realise that ADHD is not just something that explains their own story, but something that may also help make sense of the people who raised them.

Once you begin to understand what ADHD actually looks like in real life, not the stereotypes, not the schoolboy bouncing off the walls version, but the lived, everyday reality of adult ADHD, you start to see familiar patterns everywhere. Very often, you start to see them in your parents.

You might notice it in a parent’s ability to focus for hours on one particular interest while everything else gets forgotten, or in the chronic disorganisation, the piles of unfinished projects, the constant rushing and still being late. You might recognise the emotional intensity, the overwhelm, the all or nothing way of doing things, or the way they have always struggled with rest, routine, or switching off. For many people, this is not just an interesting observation, it is a deeply emotional moment that can quietly change how they understand their whole family story.

ADHD is highly hereditary, and we know this from decades of research. If you have ADHD, there is a strong likelihood that one of your parents does too, and in many families, once one person is diagnosed, it becomes clear that several relatives show recognisable ADHD traits. This does not mean that everyone in your family will have ADHD, and it does not mean it will look the same in each person, because ADHD can present very differently from one individual to another. Some people internalise it and appear anxious, perfectionistic, or constantly exhausted, while others externalise it and appear chaotic, impulsive, or always on the go, and many people are a mixture of both.

What it often does mean, though, is that these patterns have usually been present in families for a very long time.

There is often relief, because suddenly so much makes sense, but there can also be sadness or grief, both for themselves and sometimes for their parents too, when they begin to see just how much struggle has been carried, often without any real understanding, support, or language for what was actually going on.

For those of us who grew up in households where neurodivergent traits were present but never named, that environment often shaped us in ways we are only just beginning to understand. You might have grown up in a home that was chaotic, emotionally intense, unpredictable, or constantly busy yet strangely overwhelming. You might have learnt to become the organised one, the responsible one, the one who holds everything together, or you might have grown up feeling that you never quite fitted, never quite kept up, and never quite did things in the “right” way.

Our parents did the best they could with what they had, in a time when ADHD, especially in girls and women, was barely recognised at all. Many were labelled as lazy, difficult, too sensitive, too much, or not trying hard enough, and many built entire lives around coping strategies that came at a high personal cost, without ever knowing that their brains simply worked differently.

One of the reasons ADHD can feel like it is suddenly “everywhere” is not because it is new, but because we are finally starting to talk about it more openly, and to understand how it actually shows up across the lifespan, particularly in women. We now know that ADHD does not disappear in adulthood, and we also know that hormones, stress, burnout, and life demands can all make ADHD symptoms far more visible and much harder to manage.

For many women, it is perimenopause that brings everything to a head. The coping strategies that worked, or at least sort of worked, for years begin to fall apart, and things like brain fog, emotional volatility, poor sleep, and a worsening of executive functioning make it much harder to keep going in the same way. It is often at this point that women start to seek answers and eventually receive a diagnosis of ADHD that reframes not just their present, but their entire past.

You might start to understand why your mum was always exhausted and overwhelmed, or why your dad could never sit still but could spend hours completely absorbed in one particular interest. You might begin to see why emotions in your household always felt so big and so close to the surface, and you may start to look back at your childhood, your experiences at school, and your sense of yourself with a very different kind of understanding.

It can bring compassion, both for yourself and for the people who raised you, but it can also bring grief for the support that was never there, the understanding that never came, and the years spent believing that you were simply not good enough, not organised enough, or not trying hard enough.

Understanding that ADHD is hereditary, and that these patterns often run through families, helps to move the story away from personal failure and towards something far more honest and humane. It allows us to see that many of the struggles we have carried were never about character or effort, but about having a brain that works differently in a world that was not built for it.

And for many women, especially those who are navigating ADHD, midlife, and hormonal change, that shift in understanding is the beginning of being a little kinder to themselves, a little less harsh in their self judgement, and a little more able to see both their own story and their family’s story with clarity, context, and compassion.