- Cashews – Rich in magnesium and zinc, which support nerve function and reduce inflammation.
- Pecans – High in gamma-tocopherols (a form of vitamin E) and flavonoids that combat oxidative stress.
- Brazil Nuts – Just 1-2 a day provide all the selenium you need—an essential mineral that protects against brain aging and Alzheimer’s pathology.
- Macadamia Nuts – Creamy and packed with monounsaturated fats that promote heart health (and since heart health = brain health, they’re a win for dementia prevention).
Dr. Greene recommends a daily handful (about 1 ounce or 30 grams) of mixed nuts—preferably unsalted and raw or dry-roasted—to maximize benefits without extra calories or sodium. “Start small,” he says. “Add them to salads, yogurt, or just grab a handful as a snack. Over time, this simple habit could add years of sharp thinking to your life.”
More evidence? The MIND diet (a brain-focused twist on Mediterranean eating) emphasizes nuts and has been shown to cut Alzheimer’s risk by up to 53% in strict followers. Chinese cohort studies and Italian research echo this, with nut lovers showing dramatically lower cognitive impairment rates.