A groundbreaking review of studies involving more than 21 million people worldwide has revealed attention deficit hyperactivity disorder affects a staggering three per cent of the global adult population. Disturbingly, nine out of ten adults diagnosed with ADHD are not receiving the crucial treatment they require.
The landmark review led by Curtin University examined 57 unique international primary studies from meta-analytic reviews undertaken between 2009 and 2021 and found it is a global concern, impacting approximately 180 million adults.
Lead author Dr Getinet Yaya, from the Curtin School of Population Health, said the umbrella review is believed to be the first to quantify how widespread the disorder is.
“It has not only shed light on the significant prevalence of ADHD among adults but also shows the dire need for greater awareness, diagnosis, and management of this condition in adulthood,” Dr Yaya said.
“ADHD is typically associated with children but can affect any age group, and it is imperative we pay more attention to its prevention, identification, and management.
“Several factors contribute to the startling fact that a vast majority of adults are not receiving the appropriate treatment, including limited attention, limited access to specialised care, diagnostic challenges, and variations in treatment options.”
The findings also revealed ADHD-I, characterised by inattention, was the most prevalent subtype among adults, followed by ADHD-HI (hyperactivity) and ADHD-C (combined).
Co-author and head of the Curtin School of Population Health, Professor Rosa Alati, said the
prevalence of ADHD is only marginally lower than that of other mental disorders receiving significant government attention, such as schizophrenia (four per cent).
“This research aims to be a vital resource for policymakers, researchers and clinicians by providing robust and reliable data to help with the development of prevention and early intervention strategies,” Professor Alati said.
“Focusing on ADHD in adults is a critical public health concern, as leaving it untreated can lead to long term social, physical and mental health challenges.”
Published in the journal Psychiatry Research, the paper titled ‘Prevalence of Attention Deficit Hyperactivity Disorder in Adults: Umbrella Review of Evidence Generated Across the Globe’, is available online here.
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