People with larger brains, studies have shown, have better ability to think. That’s the simple way to say it, and now here’s a more detailed explanation from a scientist involved in research on the subject. “People with greater brain volume,” says Meike W. Vernooij, MD, PhD, of the Erasmus University Medical Center in Rotterdam, the Netherlands, “have been shown in other studies to have better cognitive abilities, so initiatives that help improve diet quality may be a good strategy to maintain thinking skills.”