ADHD Dementia Link
Study Finds Correlation Between ADHD and Dementia
October 17th 2023
A new study from the University of California, San Francisco, claims that adults with attention-deficit/hyperactivity disorder (ADHD) have a higher risk of developing dementia, and that stimulants could help prevent cognitive decline. It is believed that because adults with ADHD have reduced ability to cognitively compensate for later-in-life neurodegeneration, they are more vulnerable to dementia. The study also suggests that stimulant medication, such as methylphenidate or amphetamine, could improve cognitive function and reduce the risk of dementia in adults with ADHD.
The study, published in JAMA Network Open, analyzed data from more than 2.5 million adults aged 50 years or older who were enrolled in a large health care system in California between 2006 and 2019. The researchers identified 35,546 adults with ADHD and matched them with 177,730 adults without ADHD based on age, sex, race/ethnicity, and geographic region. They then followed them for an average of 7.2 years and compared their rates of dementia diagnosis.
Figure 3. Analysis of the Association Between ADHD and Dementia
The results showed that adults with ADHD had a higher prevalence of dementia than those without ADHD (1.3% vs. 0.7%). After adjusting for potential confounders, such as cardiovascular disease, diabetes, and psychiatric disorders, the researchers found that seniors with ADHD were at a 2.77-fold increased risk of developing dementia. The risk was higher for Alzheimer disease (3.07-fold), vascular dementia (2.86-fold), and other types of dementia (2.28-fold).
The researchers also examined the effect of stimulant medication on dementia risk among adults with ADHD. They found that among the 12,198 adults with ADHD who received at least one prescription for stimulants during the study period, the risk of dementia was lower than among those who did not receive any stimulants (0.8% vs. 1.6%). After adjusting for confounders, the researchers found that stimulant use was associated with a 37% lower risk of dementia among adults with ADHD.
The study is the first to examine the association between ADHD and dementia in a large and diverse population of older adults. It is also the first to suggest a potential protective role of stimulants in preventing cognitive decline among adults with ADHD. However, the study has some limitations, such as the reliance on administrative data, the lack of information on the severity and duration of ADHD symptoms, and the possibility of residual confounding.
The study's findings are consistent with previous research that has linked ADHD to cognitive impairment and neurodegeneration in older adults . The study also adds to the growing evidence that stimulants may have beneficial effects on cognition and brain health in various populations . The study's authors suggest that more research is needed to confirm their results and to explore the mechanisms and optimal dosage of stimulant treatment for adults with ADHD.
The study's implications are important for both clinicians and patients who are dealing with ADHD in later life. The study suggests that adults with ADHD should be monitored for signs of cognitive decline and screened for dementia risk factors. The study also suggests that stimulants may be a viable option for improving cognitive function and preventing dementia in this population. However, the study's authors caution that stimulants should be used with caution and under medical supervision, as they may have adverse effects or interactions with other medications.
In summary, a new study from UCSF claims that adults with ADHD have a higher risk of developing dementia, and that stimulants could help prevent cognitive decline. It is believed that because adults with ADHD have reduced ability to cognitively compensate for later-in-life neurodegeneration, they are more vulnerable to dementia. The study also suggests that stimulant medication could improve cognitive function and reduce the risk of dementia in adults with ADHD. The study is the first of its kind and has some limitations, but it provides valuable insights for future research and clinical practice.
Tips For Dealing With ADHD
Take medication as prescribed by your doctor.
Seek psychological counseling.
Educate yourself and others about ADHD.
Join a support group.
Adopt healthy lifestyle habits, such as:
Getting enough sleep.
Eating a balanced diet.
Exercising regularly.
Practicing relaxation techniques.