Wondering if you might have genes linked to dementia? Here’s what you need to know.
First, it’s important to understand that most cases of dementia, including Alzheimer’s disease, aren’t caused by a single gene. Instead, many genes can slightly increase or decrease your risk. Only a small number of people have rare genetic mutations that almost guarantee they’ll develop early-onset Alzheimer’s.
If you’re concerned about your genetic risk, start by talking to your doctor. They can review your family history and symptoms, if any, to determine if genetic testing might be helpful.
There are a few ways to check for dementia-related genes:
1. Blood tests: These can look for the APOE gene, which comes in different versions. Having the e4 version increases Alzheimer’s risk, but doesn’t guarantee you’ll get the disease.
2. Genetic testing: This examines your DNA more closely for rare mutations linked to early-onset Alzheimer’s. It’s usually only recommended if you have a strong family history of early-onset dementia.
3. At-home DNA tests: Some companies offer tests you can do at home, but these aren’t as reliable or comprehensive as medical testing.
Remember, even if you carry genes linked to dementia, it doesn’t mean you’ll definitely develop the disease. Lifestyle factors like diet, exercise, and mental stimulation also play a big role.
If you do decide to get tested, genetic counseling is important. A counselor can help you understand your results and what they mean for you and your family.
It’s also worth noting that researchers are constantly discovering new genes linked to dementia. In 2025, scientists found 16 new genes that might play a role in Alzheimer’s risk. This shows how complex the genetics of dementia really are.
Ultimately, whether to get genetic testing is a personal decision. Some people find it helpful for planning their future, while others prefer not to know. Whatever you choose, focus on maintaining a healthy lifestyle – it’s one of the best ways to keep your brain healthy as you age.
