ADHD diagnoses soar in UK but adults over 65 remain overlooked, study finds
ADHD Diagnoses in the UK Surge, Yet Adults Over 65 Remain Undiagnosed, Study Reveals
ADHD diagnoses soar in UK but adults - According to recent NHS data, nearly 2.5 million individuals across the United Kingdom have received an ADHD diagnosis. However, a new study highlights a persistent disparity in how ADHD is identified and documented, particularly among adults aged 65 and above. Despite the overall increase in diagnoses, this demographic continues to be overlooked, raising concerns about the accessibility and awareness of ADHD services for older populations.
Rising ADHD Awareness and Diagnostic Trends
Over the past decade, the number of ADHD diagnoses in the UK has grown significantly. Researchers from the University of London, the University of Liverpool, and King's College London observed a marked rise in new cases following the year 2020. This trend was evident across most age groups, though the pattern of diagnosis varied notably. For instance, children under 18, especially boys, accounted for the highest proportion of new cases, while adult diagnoses showed a different trajectory.
The study, published in *The Lancet Regional Health Europe*, analyzed data from over 3.5 million individuals registered with general practitioner (GP) practices in England during 2025. This dataset provided insights into the prevalence of recorded ADHD diagnoses within primary care settings. The findings indicated that 1.19% of these individuals had an ADHD diagnosis documented in their medical records. However, this figure fell short of international estimates, which suggest that ADHD prevalence in the general population typically ranges between 3% and 5%.
Age-Related Disparities in ADHD Diagnosis
The research team noted that the gap between recorded diagnoses and estimated prevalence was most pronounced among older adults. Specifically, only 0.05% of men and women over 65 were diagnosed with ADHD, compared to the broader population estimate. This discrepancy suggests that ADHD in older age groups may be under-recognized, potentially due to historical biases in how the condition is perceived.
Dr. Amber John, the lead author of the study, emphasized that the low diagnosis rates in this demographic do not necessarily reflect a lack of ADHD in older adults. Instead, they may indicate delays in acknowledging the condition’s presence among older generations. “Many people who grew up before ADHD became widely understood may not have had the same opportunities for diagnosis or support,” she explained. “This could mean that their symptoms were overlooked or attributed to other factors, such as aging or lifestyle.”
The study also examined trends in ADHD diagnosis from 2000 to 2024, drawing on data from more than 42 million patients in England. While the overall percentage of diagnosed cases rose, the rate of increase among older adults remained minimal. This stagnation contrasts sharply with the growing recognition of ADHD in younger populations, where awareness campaigns and evolving diagnostic criteria have contributed to more accurate identification.
Impact of Undiagnosed ADHD on Older Adults
Dr. Gavin Stewart, a joint first author of the research, pointed out that the gap between recorded diagnoses and actual prevalence is a critical issue. “When we compared the number of ADHD diagnoses in primary care with international studies, we found that England’s rates lag behind global averages,” he stated. “This under-diagnosis may lead to long-term consequences for older adults, as they could be missing out on tailored support and treatment.”
Undiagnosed ADHD can have significant effects on daily functioning, emotional well-being, and social interactions. For older adults, symptoms such as impulsivity, forgetfulness, or difficulty concentrating might be mistaken for natural declines associated with aging. As a result, many may not receive the interventions that could improve their quality of life. Dr. Stewart added, “The under-recognition of ADHD in older age groups suggests that we need to revisit diagnostic practices to ensure they account for the full spectrum of symptoms, regardless of age.”
Dr. Angela Hind, CEO of the Medical Research Foundation, echoed these concerns. “ADHD affects more than just attention spans; it can impact education, career opportunities, and personal relationships,” she said. “In older adults, the condition might also contribute to challenges in managing tasks, maintaining independence, or coping with stress.” She emphasized the importance of expanding diagnostic services to include individuals of all ages, noting that support for ADHD is often concentrated in younger demographics. “By addressing this gap, we can ensure that more people—regardless of their age—receive the recognition and care they deserve,” Hind explained.
Addressing the Diagnostic Gap
The study’s findings underscore the need for a more comprehensive approach to ADHD diagnosis. While the rise in cases among younger individuals reflects progress in understanding and treating the condition, the slower rate of diagnosis for older adults indicates a missed opportunity for intervention. Researchers suggest that this gap may be due to a combination of factors, including generational differences in symptom recognition, limited access to specialized care, and the tendency to attribute ADHD-like behaviors to age-related changes.
To bridge this divide, the study recommends revising diagnostic criteria to account for the diverse ways ADHD manifests across the lifespan. It also calls for increased training for healthcare professionals in identifying ADHD symptoms in older adults, as well as greater public awareness of the condition. “ADHD is not just a childhood disorder—it can persist into adulthood and even later life,” Dr. John noted. “We need to update our understanding of how the condition evolves with age to provide more effective support.”
Experts argue that expanding ADHD services to include older adults could have far-reaching benefits. For example, it might help individuals who have struggled with concentration or motivation for years to access therapies such as cognitive behavioral techniques or medication. Additionally, it could reduce the stigma associated with ADHD in later life, encouraging more people to seek help. “Many older adults may feel that their symptoms are simply a part of growing older,” Dr. Hind observed. “But when ADHD is properly diagnosed, it opens the door to targeted treatment and better quality of life.”
Future Implications and Research Directions
The study’s authors highlight the importance of integrating ADHD diagnosis into routine healthcare for older adults. They suggest that primary care settings should be equipped to screen for ADHD in patients presenting with persistent difficulties in focus, memory, or executive function. “This approach would help identify cases that have been overlooked for decades,” Dr. Stewart said. “It’s a step toward ensuring that all age groups have equal access to ADHD services.”
Furthermore, the research points to the value of longitudinal studies to track ADHD prevalence over time. By analyzing data from multiple decades, scientists can better understand how diagnostic practices have changed and what barriers still exist. “The under-diagnosis of ADHD in older adults is not a new phenomenon,” Dr. John remarked. “But with evolving awareness, we have the opportunity to correct this trend and provide support where it’s needed most.”
As the UK continues to grapple with the complexities of ADHD diagnosis, the study serves as a reminder that the condition affects people across all stages of life. While the surge in diagnoses for younger individuals is a positive development, the persistent neglect of older adults highlights an area ripe for improvement. By addressing these disparities, healthcare providers can offer more inclusive services and better outcomes for all patients.
“The low rates observed in older adults don’t necessarily mean that ADHD is uncommon in older age. Instead, they may reflect historical differences in recognition and access to diagnosis, particularly among generations who grew up before ADHD was widely recognised.”
“When we compared recorded ADHD diagnoses with published estimates of how common ADHD is in the population, we found a substantial gap across every age group.”
“ADHD can profoundly affect many aspects of a person’s life – education, work, relationships – and it often co-exists with other neurodevelopmental conditions.”
“We’re proud to support research that will help strengthen ADHD services and ensure more children and adults can get the recognition and help they need.”