Maybe smart people do eat more kale. A study published in the journal Neurology in December 2017 discovered that eating daily servings of leafy greens is associated with more youthful brains.
Researchers at Rush University Medical Center in Chicago looked at 960 people aged 58–99 over an average of 4.7 years. Responses to food-frequency questionnaires showed that those who ate the most servings of greens such as spinach, collards and kale (a median of 1.3 servings each day) had slower rates of cognitive decline and “brains that were the equivalent of being 11 years younger in age.”
The nutrient and antioxidant stew in these green giants—including vitamin K, folate and lutein—can help to keep your brain sharp as a whip. While this study shows only correlation vs. cause and effect, it’s still a good idea to encourage your clients to eat more like Popeye.