America deserves to have a mentally intact president—someone who can make sound decisions, think logically, work through tough problems, objectively weigh alternatives, and manage complex domestic and international policy. So, our next president of the United States (POTUS) needs to be of sound mind.

Regardless of who you plan to vote for in November, one truth is self-evident: whoever wins will be old. That is not a value statement, just a fact. And with advanced age comes an increased risk of cognitive decline and dementia. Whether Alzheimer’s disease, vascular dementia, frontotemporal dementia, or another neurological disorder, living longer brings greater risks of losing mental abilities. With Joe Biden already over 80 and Donald Trump at 78, the next guy has a more than 25% chance of brain decline during his term in office.

Fortunately, dementia risk is modifiable in half of all people if you know what you are doing and are motivated to act. That is why I am offering both candidates some dementia prevention advice.

I realize that nobody asked for my opinion, and it may sound egotistical, but dementia prevention is what I do for a living. As a Ph.D., board-certified clinical neuropsychologist, I have spent 45 years evaluating more than 20,000 older adults for........

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