You might want to grab an extra handful of your favorite bar snack.

A new study suggests that a simple, everyday food can supercharge blood flow in your brain — a vital function that tends to weaken as we get older.

Researchers found that the boost not only sharpened memory but also improved participants’ heart health.

In the study, researchers at Maastricht University in the Netherlands recruited 31 healthy adults ages 60 to 75 and put them on a 16-week regimen in which they were asked to eat 60 grams of unsalted, skin-roasted peanuts every day.

The portion — roughly two servings — had to be folded into their regular diets. Participants were told not to crush or heat the peanuts, since that could alter their nutritional properties.

The volunteers underwent tests at the start, mid

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