Study does not establish cause and effect, and experts say it highlights need for further research
Attention deficit hyperactivity disorderPeople who are diagnosed with attention deficit hyperactivity disorder as adults could be at greater risk of developing dementia later in life, research suggests.
The team behind the work say processes involved in adult ADHD may reduce the ability of the brain to compensate for the effects of processes that can happen later in life including neurodegeneration or blood flow in the brain. The results revealed that 730 people were diagnosed with adult ADHD over the study period, 96 of whom were also diagnosed with dementia. By contrast, there were 7,630 dementia diagnoses among those who did not receive an adult ADHD diagnosis.
Prof Roxana O Carare, of the University of Southampton, who was not involved in the work, also stressed the latter point, and suggested future work could explore whether the disturbances in levels of neurotransmitters in the brain seen in ADHD were linked to a higher risk in developing dementia.
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