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Translated by: Vita Abrashi-Kajtazi
- June 16, 2026 10:30 p.m
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A popular vaccine could help protect the brain from dementia, as experts say there is growing evidence that a large proportion of cases can be prevented or delayed, writes VOX.
Currently, 6-7 million people over the age of 65 suffer from dementia in America, and researchers predict that the number of cases will continue to increase as the population ages.
However, there is also encouraging news.
Numerous studies have shown that the risk of developing dementia in old age is lower today than it was a few decades ago. According to experts, this is related to improved cardiovascular health, reduced smoking, better control of blood pressure and harmful fat levels, as well as increased levels of education.
One of the most interesting discoveries of recent years is related to the vaccine against herpes zoster, the disease known as “shingles”.
A study carried out in Wales found that vaccinated people were around 20 per cent less likely to develop dementia in the seven years following vaccination compared to those who had not received the vaccine.
Other studies conducted in Canada and other countries have found similar results, suggesting that the vaccine may have a protective effect on the brain.
However, the scientists point out that it is still not clear whether the protection comes from preventing infection or from stimulating the immune system. Therefore, more research is needed.
What can you do to reduce the risk?
According to a 2024 report by the medical journal The Lancet, up to 45 percent of dementia cases could be prevented or delayed by acting on risk factors.
Experts recommend:
don’t smoke,
keep cholesterol and blood pressure under control,
treat hearing loss,
avoid obesity,
stay physically active,
take care of heart health.
Researchers point out that middle age is the most important time to take these preventive measures.
Although the number of dementia cases is expected to increase in the coming years, experts say the disease is not necessarily an inevitable consequence of aging.
