ADHD and Autism, debunked for the people who don't believe in them
Every neurodivergent person has had a version of this conversation: “ADHD isn't real,“ “everyone's a bit autistic,“ “it's overdiagnosis,“ “it's just bad parenting.“ It's tiring. So here's a single page you can send people. The evidence is on our side and has been for decades.
Myth: “ADHD isn't real, it's just kids being kids“
Fact: ADHD has been described in the medical literature since 1798 (Alexander Crichton). The first NHS-recognised diagnostic criteria appeared in 1968. It's recognised by the WHO, NICE, the NHS, the American Psychiatric Association and every major neurological body on Earth. Brain imaging shows measurable differences in dopamine signalling, prefrontal cortex development and reward processing.
Myth: “It's overdiagnosed“
Fact: UK ADHD prevalence is ~3–4% of adults; current diagnosed prevalence is ~0.5%. We're still chronically under-diagnosing, especially women, people of colour, and adults. The recent rise in diagnoses reflects awareness catching up — not a new epidemic.
Myth: “Autism is being diagnosed in everyone now“
Fact: ~1–2% of the UK population is autistic. Diagnostic criteria were broadened in 2013 (DSM-5) to include people previously labelled Asperger's or PDD-NOS. Late-diagnosed adults — particularly women — are filling a gap, not creating one.
Myth: “It's just bad parenting / no discipline“
Fact: ADHD has a heritability of 70–80% (twin studies). That's higher than height. Parenting affects how a child copes, not whether they have it. Strict parents and gentle parents both have ADHD kids in roughly equal numbers.
Myth: “Sugar / screens / vaccines cause ADHD or Autism“
Fact: None of these cause either. The Wakefield vaccine paper (1998) was retracted, the author was struck off, and every large-scale study since has shown no link. Sugar studies (Wolraich 1995, NEJM) found no behavioural effect even when parents thought they saw one.
Myth: “Stimulant medication is just legal speed“
Fact: Therapeutic doses don't 'get you high' — in ADHD brains they normalise dopamine availability. NICE recommends them as first-line for adults. The MTA Cooperative study (the largest ever) found medication + behaviour therapy is more effective than either alone. Long-term untreated ADHD raises risk of accidents, addiction, and unemployment.
Myth: “Everyone's a bit autistic / a bit ADHD“
Fact: Everyone occasionally loses keys or feels overwhelmed in a noisy room. Clinical ADHD/Autism means symptoms are pervasive, persistent, present from early life, and cause functional impairment in at least two settings. The bar is high, and it's a real bar.
Myth: “ADHD goes away in adulthood“
Fact: Symptoms change — hyperactivity often becomes inner restlessness — but ADHD persists in ~60–70% of cases. Untreated adult ADHD raises risk of substance misuse, divorce, accidents, and shortens lifespan by 8–13 years (Barkley & Brown, 2019).
Myth: “Autism is rare and severe — your child can talk, so they can't be autistic“
Fact: Autism is a spectrum. Many autistic people are verbal, employed, and parents. Communication style differs — pragmatic and sensory profile, social-energy cost, monotropic focus — not always speech.
Myth: “AI / TikTok is making people think they're ADHD“
Fact: Self-recognition is part of how undiagnosed adults find clinicians. Every robust UK clinic uses structured tools (DIVA-5, ASRS, ADOS, AQ-10) and a clinical interview — TikTok doesn't diagnose anyone. Self-recognition is a doorway, not a diagnosis.