Diet is definitely key, excersize doesn't hurt either.. many of the food we have today are contributing to many of our health problems. Have her research Nutrisystem's methods, the creator, Dr Diana Schwarzbein has some books out that may be of interest as well, it's more about lifestyle change in how we eat and such than it is anything. With her program, you get filled up on less food, as it is the kind of food that was being eaten before all the industrialized foods came out, and eople weren't having the troubles with being overweight like we do now. She actually found people were losing weight by eating foods that we have been told are fattening. Things like whole milk are actually better than skim for us, and weight can be lost while drinking it. My wife has been on the plan for a while now, and went to the point of getting their preplanned meals, and has lost about 20 pounds recently. The nice thing is that with their preplanned meals, you don't have to buy them forever, as they give you the recipes once you get to your goal weight. If your wife is into health and nutrition, she will find this very interesting. The link is direct to the site, sales pitch and all... but my wife and mother have both read the books, and being medical professionals, it all makes perfect sense to them. Here