Study Links ADHD to Increased Risk of Dementia in Older Adults

<p>A study conducted by the University of Pittsburgh School of Medicine suggests a potential link between attention deficit hyperactivity disorder (ADHD) and an increased risk of dementia. The research involved over 187,000 adults aged 50 and older and found that individuals with ADHD had a higher incidence of dementia or mild cognitive impairment (MCI).</p><p>The observational study utilized electronic health records and genetic information from participants enrolled in the U.S. National Institutes of Health All of Us Research Program. Cognitive impairment was observed in 6.7% of participants with ADHD compared to 3.4% without the disorder, indicating a nearly twofold increase.</p><p>After adjusting for age, gender, and other health conditions, researchers found that individuals with ADHD had more than four times the risk of developing dementia. The findings were published on October 7 in JAMA Psychiatry, with researchers noting that the study shows an association but does not establish causation.</p><p>Senior author Tharick A. Pascoal, an associate professor of psychiatry and neurology at the University of Pittsburgh, stated, "This doesn’t prove that ADHD causes dementia, but seeing the same pattern show up independently in medical records and in people’s genes gives us greater confidence that the association is not simply an artifact of how ADHD gets diagnosed."</p><p>The study also revealed that individuals with the highest genetic susceptibility to ADHD had a 35% greater risk of dementia compared to those with the lowest susceptibility. Co-first author Guilherme Bauer-Negrini, a postdoctoral associate in biomedical data science at Pitt, emphasized the importance of analyzing genetic information alongside health records to identify patterns that may not be visible in smaller studies.</p><p>Dr. Elizabeth Landsverk, a geriatric medicine and dementia expert, noted that individuals with ADHD may face challenges with organization, which could contribute to a higher risk of cognitive impairment. She explained that difficulties in managing health issues and accessing medical care may correlate with increased dementia risk.</p><p>The study found that individuals with ADHD had a 20% higher incidence of utilizing health resources. Landsverk highlighted the complexities of navigating healthcare, particularly for those with ADHD, who may struggle with focus and organization.</p><p>She also pointed out that distinguishing between ADHD and cognitive decline can be challenging, as symptoms may overlap. Changes in judgment, mood, or social behavior may be more indicative of dementia than ADHD.</p><p>While the study identified an association between ADHD and cognitive impairment, Landsverk emphasized that certain lifestyle behaviors can help reduce overall dementia risk. She recommended maintaining a healthy weight, avoiding smoking and excessive alcohol consumption, and staying physically active, along with managing blood pressure, cholesterol, and diabetes.</p><p>Landsverk advised that anyone experiencing persistent issues with memory, focus, organization, or daily task management should consider seeking an evaluation from a healthcare professional.</p>