Adding one type of food to your diet could help to lower your risk of a devastating disease by almost a quarter. According to experts, eating this food “regularly” could be key in helping to prevent dementia. As a condition that mainly affects people over the age of 65, dementia is often linked to getting older.

While it is true that your chances of developing dementia increases as you age, there are a whole host of other factors at play. In fact, according to research , around 40 percent of dementia cases are thought to be preventable through certain lifestyle changes. It is believed diet can have an impact on your chances of getting dementia.

With this in mind, experts at the Alzheimer’s Society urged people to eat more oily fish. The charity says: “Eat fish regularly – particularly oily types like salmon and mackerel.” However, it adds: “Try to limit eating battered or breaded fish which is high in unhealthy fat.

” This is because oily fish is rich in omega-3 fatty acids, which have been linked to lower rates of cognitive decline. They also make up part of a Mediterranean diet, a way of eating that has also been associated with a reduced risk of dementia. Find out about the symptoms you need to watch out for and get health advice with our free health newsletter from the Daily Express “For most people, following the Mediterranean diet is a good way to ensure a healthy diet, which may be important for maintaining good brain function,” the Alzheimer's Socie.