A Mediterranean-style diet may be the answer in protecting against diabetes, even for those who are in the higher-risk category.

The diet – rich in olive oil, fruit, vegetables and fish and low in meat and dairy products – provides “substantial protection” against the illness, a study has revealed.

Eating such meals helps keep people healthy and wards off type 2 diabetes, which is linked to lifestyle factors like diet and obesity.

People who stuck strictly to a Mediterranean diet had an 83% lower chance of developing diabetes than those who did not, the study found.

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