It's partly about emotional eating. On her web site, author Michelle May, MD, says she's a "recovered yo-yo dieter."
On this plan, you ask yourself -- before the first bite -- if you're really hungry or are feeling something else, like anger, loneliness, or boredom.
It's also about noticing when you're full, and not eating after that point.
What You Can Eat and What You Can't
Eat foods that you enjoy, but try to include these in your diet:
Produce. Choose colorful, high-fiber fruits and vegetables more often than starchier potatoes and corn. Eat plenty of beans, too.
Grains. Try to make half of the servings that you eat whole grains.
Dairy. Low-fat and nonfat options are healthiest.
Meat, poultry, and fish. Lean cuts of red meat and skinless poultry are best. Eat seafood instead of other meats at least twice a week.
Sweets. Cake, chocolate, and other sugary treats are allowed in moderation, if you decide that you really want them.
Alcohol. If you already drink, you may continue, especially if you favor red wine. But keep it moderate: Women shouldn't have more than one drink per day; men should stop at two.
Level of Effort: Medium
The big changes will be asking yourself whether you're hungry before you eat, because many people eat to try to satisfy other triggers.
When you decide that you're hungry enough to eat, stop everything else and concentrate on the flavors, textures, and colors so you'll know when you start to feel full -- no more eating mindlessly while driving or watching TV.
Limitations: There aren't a lot of limitations in terms of what you can eat. The plan is based on eating foods you enjoy, so while healthy foods are encouraged, most foods are fair game.
Cooking and shopping: You may not need to change your shopping list or cooking habits drastically. It's more about tuning in to why you're eating.
Packaged foods or meals: No.
In-person meetings: No.