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ADHD myths and facts

Wrong ideas about ADHD can delay help for years. These are ten of the most common, and what research shows.

Last checked: 17 October 2026

  1. Myth “ADHD isn't real.”

    Fact ADHD is a recognised medical condition. The World Health Organization lists it in its international classification of diseases.1 Many years of research, including studies of millions of people, confirm it.2

  2. Myth “It's caused by bad parenting.”

    Fact In most people, ADHD comes from many genetic and environmental factors acting together, each with a small effect.2 Parenting does not cause it, but parenting skills can make daily life with ADHD easier.3 Skills for parents

  3. Myth “Too much sugar causes it.”

    Fact A review of studies with over 25,000 participants from six countries found no link between eating sugar and ADHD.2

  4. Myth “They just need to try harder.”

    Fact Studies find differences in how the brain develops and works in people with ADHD.2 Effort alone does not make it go away. Support, adjustments at school or work, and treatment do help.4

  5. Myth “Clever children can't have ADHD.”

    Fact ADHD occurs at every level of intelligence. It also causes problems for very able people, and can be diagnosed in them.2

  6. Myth “Only boys have ADHD.”

    Fact In childhood, ADHD is about twice as common in boys as in girls.2 Girls and women more often have the inattentive type, which is easier to miss, so many are diagnosed late or not at all.5

  7. Myth “Children grow out of it.”

    Fact About 2 in 3 children with ADHD still have some symptoms at age 25.6 Around 2 to 3 in every 100 adults have ADHD.2 ADHD at every age

  8. Myth “It's a modern, Western invention.”

    Fact ADHD is found at similar rates in North America, Europe, Asia, Africa, South America and Oceania. It has not become more common over the past thirty years; doctors have simply become better at recognising it.2

  9. Myth “Treatment just means pills.”

    Fact Treatment usually combines information and support for the family, changes at school or work, talking therapies, and medicine when it is needed.4 For children under 6, parent training is the recommended first treatment.7

  10. Myth “ADHD medicines lead to addiction.”

    Fact Large reviews found that treatment with stimulant medicines did not increase the risk of later alcohol, nicotine, cocaine or cannabis problems.2 Untreated ADHD, on the other hand, is linked to a higher risk of substance use.2

More answers: Frequently asked questions · What is ADHD?

Where this information comes from

  1. World Health Organization. ICD-11 for Mortality and Morbidity Statistics, code 6A05: Attention deficit hyperactivity disorder.
  2. Faraone, S.V. et al. (2021). "The World Federation of ADHD International Consensus Statement: 208 evidence-based conclusions about the disorder." Neuroscience & Biobehavioral Reviews 128: 789–818.
  3. US Centers for Disease Control and Prevention. "Behavior Therapy for ADHD."
  4. National Institute for Health and Care Excellence (UK). NG87: Attention deficit hyperactivity disorder: diagnosis and management (2018, updated 2019).
  5. NHS (UK National Health Service). "ADHD in adults."
  6. Faraone, S.V., Biederman, J. and Mick, E. (2006). "The age-dependent decline of attention deficit hyperactivity disorder: a meta-analysis of follow-up studies." Psychological Medicine 36(2): 159–165.
  7. US Centers for Disease Control and Prevention. "Behavior Therapy First for Young Children."