Imagine spending your entire life feeling that ordinary things seem strangely difficult. You lose your keys, forget appointments, put off tasks until the last possible moment and struggle to finish things you genuinely want to do. You promise yourself that tomorrow will be different. Sometimes it is. Often, it isn’t.

But ADHD doesn’t always look like chaos from the outside.

Some people with ADHD are meticulously organised. They arrive on time, meet deadlines and keep their lives running smoothly. They have learned to use calendars, reminders, lists and carefully structured routines to compensate for their difficulties. What others see as effortless organisation may require considerable mental effort behind the scenes.

For some, the exhaustion comes not from what is happening around them, but from what is happening inside their heads: thoughts jumping between topics, competing priorities, unfinished mental conversations and the constant effort of trying to direct their attention where they want it to go. They may appear calm and capable while experiencing considerable mental restlessness.

This isn’t everyone’s experience of ADHD, and internal mental noise alone doesn’t establish a diagnosis. But it highlights something important: you cannot reliably judge how someone regulates their attention simply by looking at how organised their life appears.

Now imagine discovering that these difficulties might have an explanation. Then imagine being told that the explanation itself might be a myth.

That was the controversy surrounding Channel 4’s The Great ADHD Myth?, presented by psychiatrist Max Pemberton. The documentary questioned whether ADHD is a genuine neurodevelopmental condition or whether behaviours attributed to it might be better explained by modern lifestyles, social expectations and the environments in which we live.

These are questions worth exploring. ADHD diagnoses have increased, diagnostic practices deserve scrutiny, and medication isn’t the right answer for everyone. But there is a considerable difference between questioning how we diagnose ADHD and suggesting that the condition itself doesn’t exist.

So what does the evidence actually tell us?

If ADHD is real, why can’t we see it on a brain scan?

One challenge raised in debates about ADHD is that there is no brain scan or blood test that can definitively diagnose it. Surely, if ADHD were a biological condition, scientists would be able to identify it?

Not necessarily.

Many recognised medical and psychiatric conditions cannot be diagnosed using a single laboratory test. Diagnosis often depends on a consistent pattern of symptoms, developmental history and the impact on everyday functioning.

ADHD is similar. Research has identified differences in brain structure, function and development between groups of people with and without ADHD. Genetic studies also demonstrate substantial inherited influences. However, these findings overlap considerably between individuals and cannot currently establish whether a particular person has ADHD.

That is a limitation of our diagnostic tools, not proof that the condition is imaginary.

Depression, for example, cannot be definitively diagnosed using a brain scan. Neither can most anxiety disorders. Yet we don’t conclude that these conditions are fictional simply because they lack a convenient biological test.

The brain is extraordinarily complex. Our understanding of how its differences translate into individual experiences remains incomplete. Expecting science to produce a simple biological marker before accepting a condition is real sets an unrealistic standard.

Everyone gets distracted. What makes ADHD different?

We all procrastinate, forget things and struggle to concentrate sometimes. Modern life is increasingly demanding and rarely offers much peace and quiet.

So how do we distinguish ADHD from ordinary human behaviour?

The answer lies not simply in whether someone experiences certain symptoms, but in their persistence, developmental history, presence across different settings and impact on daily life.

A person who occasionally forgets appointments isn’t necessarily experiencing ADHD. Someone who has persistently struggled with attention, impulsivity or hyperactivity since childhood, with significant consequences for their education, relationships or work, may be.

A proper assessment also considers other explanations. Sleep deprivation, anxiety, depression, trauma and other conditions can affect concentration and organisation. Sometimes these difficulties resemble ADHD; sometimes they coexist with it.

This is why a thorough clinical assessment matters. A diagnosis shouldn’t be based solely on recognising yourself in a list of symptoms on social media.

But there’s a problem with the argument that everyone experiences ADHD-like behaviours: it confuses having a trait with experiencing a clinically significant pattern of difficulties.

We all feel anxious occasionally. That doesn’t make anxiety disorders imaginary. We all experience sadness. That doesn’t mean depression doesn’t exist.

The distinction is not whether a behaviour occurs in the general population. It’s how consistently it occurs, how severely it affects someone and what else is happening in their life.

Is modern life making us all ADHD?

The documentary raised questions about whether diet, school environments and contemporary lifestyles might explain the increase in ADHD diagnoses.

There is something important here. Our environments influence our attention, sleep, behaviour and emotional wellbeing. Children may struggle in classrooms that demand hours of uninterrupted sitting. Adults may find concentration difficult when constantly interrupted, stressed or sleep-deprived.

Changing these conditions can make a real difference.

However, environmental influences don’t rule out a neurodevelopmental condition. A person can have an underlying vulnerability while their circumstances make their difficulties better or worse.

Think of someone with poor eyesight. Reading in dim light makes things harder, while better lighting helps. But improving the lighting doesn’t mean the eyesight problem was caused by the room.

The comparison isn’t exact, but the principle holds: context matters without necessarily explaining everything.

Supportive environments, predictable routines, adequate sleep and reduced distractions can benefit people with ADHD. They can benefit people without ADHD, too. Their usefulness doesn’t tell us whether an individual diagnosis is correct.

Nor does improvement after a lifestyle change establish that ADHD was never present. If several things change simultaneously, it’s difficult to know which change produced the improvement or how much each factor contributed.

The sensible conclusion is that lifestyle and environment matter. The unsupported leap is that they explain away ADHD altogether.

What about overdiagnosis and medication?

Here, the debate deserves serious attention.

ADHD diagnoses have risen, and not every diagnosis will necessarily be accurate. Some people may receive inadequate assessments, while others may have difficulties better explained by different conditions or circumstances.

Diagnostic standards, waiting lists, commercial interests and the influence of social media all deserve scrutiny. A label should never replace careful clinical thinking.

But the possibility of overdiagnosis doesn’t establish that the underlying condition is fictional. It establishes that getting the diagnosis right matters.

Medication also requires a balanced discussion. ADHD medicines can improve symptoms and everyday functioning for many people, but responses vary. Side effects can include reduced appetite, sleep difficulties and other unwanted effects. Some people find medication helpful; others don’t tolerate it well or prefer alternative approaches.

An individual’s negative experience of medication is important, but it cannot tell us how everyone else will respond. Equally, a positive response to medication doesn’t prove someone has ADHD. Treatment response alone is not a reliable diagnostic test.

Medication should be considered alongside the person’s needs, preferences, circumstances and clinical assessment. Psychological support, practical strategies and adjustments at school or work may also be useful.

Questioning how medication is prescribed is responsible. Treating concerns about medication as evidence that ADHD doesn’t exist is a different matter.

What happens when we call ADHD a myth?

Labels can be limiting. A diagnosis can become an explanation for everything, discourage people from exploring other contributing factors or lead others to lower their expectations.

But a diagnosis can also help someone make sense of a lifetime of difficulties.

Imagine an adult who has spent decades believing they are lazy, unreliable or simply not trying hard enough. They have bought planners, downloaded productivity apps and promised themselves countless fresh starts. They may be successful in some areas of life while struggling considerably in others.

Perhaps they have built an elaborate system to keep everything under control. Their diary is meticulously maintained, their emails are answered and their deadlines are met. Yet they spend an exhausting amount of time planning, checking, reminding themselves and worrying about what they might have forgotten.

Discovering that their difficulties fit a recognised pattern doesn’t magically solve everything. But it can replace some of the shame with understanding and help them find strategies that are better suited to their needs.

This isn’t an argument for diagnosing everyone who struggles with concentration. It’s an argument for taking persistent difficulties seriously enough to investigate them properly.

We should also be careful not to assume that everyone who suspects they have ADHD does. Self-recognition can be a starting point for assessment, not a substitute for one.

We can question the system without dismissing the people

The most useful question isn’t whether ADHD is a myth. It’s how we can distinguish accurate diagnoses from inaccurate ones, provide effective treatment and create environments in which people with different needs can function well.

We should scrutinise diagnostic practices. We should question pharmaceutical interests. We should examine the effects of poverty, trauma, sleep deprivation and educational pressures. We should make schools and workplaces more accommodating of different ways of thinking and learning.

We should also recognise that these factors can coexist with ADHD rather than automatically replace it as an explanation.

The danger of framing ADHD as a myth is that it creates a false choice: either every difficulty is biological and every diagnosis is correct, or the condition is a cultural invention and people simply need to change their behaviour.

Neither position reflects the evidence.

ADHD is a recognised neurodevelopmental condition supported by extensive genetic, clinical and neuroscientific research. Its diagnosis is imperfect, its causes are complex, and its treatment requires careful judgement.

We can acknowledge all three facts at once.

Perhaps the more productive question is not why so many people seem to struggle with attention and self-regulation, but what those struggles mean for each individual, what contributes to them, and what kind of help would make a genuine difference.

That requires curiosity rather than certainty, evidence rather than headlines, and an understanding that questioning a diagnosis is not the same as dismissing someone’s experience.