A recent study published in JAMA Psychiatry underscores the long-term implications of Attention-Deficit/Hyperactivity Disorder (ADHD) on brain health. Researchers tracked over 187,000 adults aged 50 and older over an average of ten years and discovered a significant correlation between ADHD and an increased risk of mild cognitive impairment and dementia.

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The study analyzed data from the All of Us Research Program and included 3,026 adults diagnosed with ADHD. Results indicated that 6.7% of these participants developed mild cognitive impairment or dementia, compared to 3.4% of those without ADHD. After adjusting for various factors, including other health conditions and healthcare engagement, adults with ADHD had more than four times the risk of cognitive decline.

Additionally, individuals with ADHD-related genetic markers, even if they did not have a formal diagnosis, also exhibited an elevated risk. Those with the highest genetic risk experienced a 35% higher likelihood of developing cognitive impairment, suggesting biological factors may contribute beyond mere diagnosis.

A related study showed that older adults with a higher genetic predisposition for ADHD faced greater cognitive decline over six years, especially if they exhibited early signs of Alzheimer’s-related brain changes.

The research particularly highlights underdiagnosed ADHD in women. Women often receive ADHD diagnoses later in life as their symptoms can be less conspicuous and may differ from the hyperactive type commonly associated with ADHD. Midlife hormonal changes can exacerbate ADHD symptoms, leading many to struggle with attention and emotional regulation in perimenopause and menopause when they might have previously managed well.

While the study establishes a strong link between ADHD and dementia risk, it stops short of proving causation. The findings advocate for proactive brain health management regardless of an ADHD diagnosis. Key strategies include regular physical activity, prioritizing sleep, seeking evaluations for ADHD if focus issues arise, and working with professionals to improve coping mechanisms.

In summary, this study encourages a reevaluation of ADHD's impact on long-term cognitive health, particularly for women who may be navigating undiagnosed symptoms into midlife.