Susan B. Roberts, author of The Instinct Diet: Use Your Five Food Instincts to Lose Weight and Keep It Off (Workman Publishing, 2009), is a professor of both nutrition and psychiatry at Tufts University. And while her diet plan won’t guarantee success, it represents just about the best scientific approach to smart weight loss you’ll find. Roberts’ premise isn’t groundbreaking. But some of her advice, especially relating to taming hunger, is worth repeating.

For years the nation’s expanding girth has been blamed on lazy lifestyles. If more of us would just get off the couch and get moving, the thinking goes, we wouldn’t have to worry about weight loss plans and diet books. New evidence paints a more complicated picture.

Chocolate…wine…blueberries…sweet potatoes. They’re all on the menu at the Longevity Cafe.