If you have been putting off doing something about your hearing, this is worth two minutes of your time. In July 2026, the World Health Organization published new guidelines on dementia. They say up to 45% of dementia risk could be prevented or delayed. And for the first time, hearing aids are named in them.
What the WHO said
The guidelines list 14 things that raise your risk of dementia. Most of them you would expect: smoking, high blood pressure, diabetes, not moving enough, being cut off from other people. Hearing loss is on that list too.
On hearing, the wording is that hearing aids may be offered to adults with hearing loss as part of a plan to reduce risk. That is the clearest the WHO has ever been about hearing aids and dementia.
"We know more today than ever before about what drives dementia risk, and these guidelines translate that knowledge into action," said Dr Tedros Adhanom Ghebreyesus, the WHO's Director-General.
Hearing loss is the biggest one you can still fix
In 2024, a group of researchers called the Lancet Commission ranked all 14 of those risks to see which ones mattered most. Hearing loss came out joint top, at 7% of preventable cases. Smoking was 5%. High cholesterol was 5%. Being isolated was 2%. Diabetes was 1%.
The only thing tied with hearing loss was how much schooling someone had, and nobody can go back and change that now. Your hearing is different. That one is still on the table.
What about hearing aids themselves
In 2023, researchers pooled 31 separate studies covering more than 130,000 people and published the results in JAMA Neurology. The people who wore hearing aids had around 20% less cognitive decline over the long run than the people who left their hearing loss alone.
A large American trial called ACHIEVE followed people for three years. In older adults who were already at higher risk, treating their hearing cut the rate of decline by close to half. In healthier people, it did not make a measurable difference.
The honest part
None of this proves that hearing aids stop dementia, and we are not going to tell you it does. Most of the research shows a link rather than a cause, which is exactly why the WHO chose its words so carefully. Anyone promising you more than that is selling something.
Here is what nobody argues about. When your hearing goes, conversation gets tiring. You stop asking people to repeat themselves. You skip the dinner, you take fewer calls, you sit quietly at the family gathering instead of in the middle of it. That part is real, and that part you can do something about.
Where to start
With a hearing test. That is all. It takes very little time, nothing about it hurts, and at the end of it you know where you stand. If you need hearing aids, you will find out. If you do not, you get to stop wondering.
Every one of our Colorado studios does hearing tests, and you are welcome to bring your husband, wife, son or daughter along. Most people do.
Sources: WHO, up to 45% of dementia risk could be prevented or delayed. Lancet Commission 2024, dementia prevention, intervention and care. JAMA Neurology, hearing aids and cognitive decline. NIH, hearing aids slow cognitive decline in people at high risk.