“I consider beans the most underappreciated brain-health food,” Kulze says. Bold statement? Yes. But science backs it up. Beans are a low-glycemic (meaning they’re very slowly digested), nutrient-dense starch that provide the brain with its preferred fuel: glucose. Plus, they pack a powerful quintet of nutrients, including magnesium, zinc, fiber, antioxidants, and folate. Folate is essential for brain function, and folate deficiency can lead to neurological disorders, such as depression and cognitive impairment, according to research published in Nature Reviews Neuroscience. “Actually, beans provide more folate than any other food,” Kulze says. Cheap, convenient, and versatile, beans are a brain-health winner that are hard to beat.