Certain diets, like the Mediterranean diet, have sometimes been associated with better cognitive outcomes, but some studies have found no link between what people eat and their risk of dementia -- like one published in the medical journal JAMA.

Certain diets, like the Mediterranean diet, have sometimes been associated with better cognitive outcomes, but some studies have found no link between what people eat and their risk of dementia -- like one published in the medical journal JAMA.

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No link between diet and dementia? Not so fast

When it comes to diet and dementia, the research can seem like a mixed bag. Certain diets, like the Mediterranean diet, have sometimes been associated with better cognitive outcomes, but some studies have found no link between what people eat and their risk of dementia -- like one published Tuesday in the medical journal JAMA.