Book Nook: 'The Happiness Diet'

Graham, a health journalist, and Ramsey, an assistant clinical professor of psychiatry at Columbia University, say what you eat definitely affects how happy you are. Emerging neuroscience and nutrition research, they write, shows "that by changing what you eat, you can improve your mental and emotional well-being. . . . You can even make your brain grow."

First, flee from the Modern American Diet -- "we call it MAD" -- of simple sugars and refined carbs, which leads to "Unhappy Meals" that "can expand your waistline and starve your brain at the same time."