"About this, [Dr., Oz] is right on: the long-term battle is more likely won by changing things 100 calories at a time. However, the downside of that is that it amounts to about 10 pounds a year. Most dieters want it faster than that. There is also the emotional issue about overeating. If obesity were just about controlling hunger, we would have far fewer fat people. People overeat for a variety of reasons, and hunger is only one of them."
Chair and professor
Department of Nutrition and Food Sciences
University of Vermont
"I have been doing obesity treatment research for over 16 years. As far as I know there is no evidence to support the notion that any particular type of diet can help you reduce body fat more in one area that another.
"In fact, the real issue I have with most of these plans is that there is never any empirical evidence provided to support they are any better than our currently available techniques -- such as calorie restriction, exercise and behavior modification."
Director, Cornell Food and Brand Lab
"'You: On a Diet' is one of the most reader-friendly diet books on the market. Very simple and very clear. My comment on it could be summarized in the sentence: For most Americans, the answer might be less 'waste management' and more 'environment management.'"
Dr. Steven Heymsfield
Professor of medicine
Obesity Research Center
St. Luke's-Roosevelt Hospital
New York, N.Y.
"No new ideas; sprinkle in a little science with good marketing and an articulate Columbia heart surgeon, and you sell a lot of books, especially when there is nothing else out there. Finding approaches that really work is extremely hard and well beyond whatever these two authors tout in their book. Fancy package, but nothing inside."
New York, N.Y.
"I'm a big fan of the authors' ability to explain the complicated, science-based whats, whys and hows of weight loss, in such consumer-friendly language. While I'd definitely recommend this book, I would suggest skipping the part on supplements. My experience is that people who believe in even the slightest benefit of a supplement, often try that route -- or over-try that route -- as an easy way out for weight loss. Unfortunately, there are no shortcuts."
Hospital food and nutrition services
Sioux Falls, S.D.
"Drs. Oz and Roizen's diet plan is not 'the new biology of fat,' but common sense nutrition guidelines that registered dietitians have been teaching for years."
Dr. Richard Feinman
Nutrition and Metabolism
"Well, I guess that pretty much takes care of the obesity epidemic. I suggest for their next book: 'You: In Iraq.'"