If my parent has dementia, will I get it too?

Probably not just because of them. A parent with Alzheimer's raises your risk compared with someone without that history, but most children of people with dementia never develop it. For the common late-onset form, age and lifestyle matter more than family history.

Watching a parent live with dementia naturally raises the question of whether you are next. For most people the honest answer is reassuring: your risk is somewhat higher than average, but a parent's diagnosis is far from a guarantee.

What a parent's diagnosis changes

Having a first-degree relative (a parent or sibling) with Alzheimer's does raise your risk compared with someone who has no family history. Having more than one raises it further. But the increase is modest, and most people with an affected parent never develop dementia themselves. Part of that shared risk is genes, and part is shared environment and lifestyle.

The exception to know about

There is a rare situation that behaves differently: families with an inherited, early-onset form caused by a single gene. Here dementia tends to appear before 65 and affects many relatives across generations. If that pattern is in your family, it is worth discussing with a doctor, who may suggest genetic counseling.

Where to put your energy

You cannot change your parents or your genes, but you can lower your own risk. Age is the biggest factor, and after that the strongest levers are the ones that protect your heart: regular exercise, not smoking, managing blood pressure, blood sugar, and weight, staying socially connected, and keeping mentally active. These will not guarantee anything, but the evidence links them to meaningfully lower risk.

This is general information, not medical advice. Every situation is different, so talk to a doctor about yours.