Study Links ADHD to Increased Risk of Cognitive Decline in Older Adults
Translated & summarized from Walla by baba
A University of Pittsburgh study published in JAMA Psychiatry found a link between ADHD and cognitive impairment in adults over 50. Analyzing data from over 187,000 participants, researchers observed a higher incidence of mild cognitive impairment or dementia among those with ADHD. While initial risk ratios were significant, adjustments for various factors reduced the observed risk, though a correlation remained. The study suggests the need for cognitive monitoring in adults with ADHD and highlights the importance of distinguishing new cognitive decline from existing ADHD symptoms.
The story in 6 lines · by baba
- A study found a correlation between ADHD and increased risk of cognitive impairment in adults over 50.
- Researchers analyzed data from over 187,000 participants, with 6.7% of those with ADHD diagnosed with cognitive issues.
- Statistical models showed a reduced, but still present, increased risk after accounting for various health and demographic factors.
- Genetic data also indicated a higher risk of cognitive impairment in individuals with a genetic predisposition to ADHD.
- The study emphasizes distinguishing new cognitive decline from typical ADHD symptoms.
- A similar link was previously found in a 2023 Israeli study involving over 109,000 individuals.
A study led by the University of Pittsburgh, published in JAMA Psychiatry, has found a correlation between Attention Deficit Hyperactivity Disorder (ADHD) and cognitive impairment in older adults. Researchers analyzed medical records and genetic data from over 187,000 participants aged 50 and above in the U.S. All of Us research program. Among these, 3,026 individuals had an ADHD diagnosis. Over an average follow-up period of approximately 10.3 years, 6.7% of participants with ADHD were diagnosed with mild cognitive impairment or dementia, compared to 3.4% of those without the disorder.
While the direct ratio suggests a nearly twofold increased risk, a statistical model considering various factors like age of diagnosis onset and participant characteristics yielded a risk ratio of 4.6. However, this figure was adjusted downwards to 3.08 after accounting for comorbidities, education, smoking, and healthcare usage, and further reduced to 2.26 when comparing matched groups. The study emphasizes that most participants with ADHD did not develop cognitive impairment during the follow-up period.
Genetic data also supported the link, showing a 35% higher relative risk of cognitive impairment in individuals with the highest genetic predisposition score for ADHD compared to those with the lowest. The researchers noted that the consistency between record-based findings and genetic information strengthens the possibility that the connection is not solely due to diagnostic methods, though it does not prove causation.
ADHD is a developmental disorder with childhood onset, though diagnosis may occur in adulthood. Symptoms can include disorganization, inattention, and memory difficulties. The study highlights the importance of distinguishing between long-standing ADHD-related challenges and new cognitive decline, suggesting that new difficulties impacting daily independence warrant further medical investigation. The findings align with a 2023 Israeli study of over 109,000 individuals that found a link between adult ADHD diagnosis and dementia, with a standardized risk ratio of 2.77.
The researchers recommend tailored cognitive monitoring for adults with ADHD, rather than a universal screening schedule. They advise individuals experiencing memory, language, or functional decline to consult a doctor with specific examples of changes.