Being an overweight woman in her 40s, I have lots of experience with trying and failing to lose fat, and with the misery entailed in the process. Dr. McDougall's book has the first system I have found that I really feel I can happily follow, not just to lose weight, but for the rest of my life in order to stay healthy and maintain my weight loss. At first I was startled by what Dr. McDougall had to say about nutrition, but I have found in practice that his claims are correct. My energy level took a big leap forward within two days, and I just keep feeling better all the time. In my experience, losing weight with this system is unbelievably easy and painless, and your food can be as simple or as gourmet as you want to make it. In the past I tried the Atkinson high protein diet (the most opposite one to this!), and even if I did temporarily lose some weight, I couldn't wait to get off that diet and start eating real food again, and I felt very unhealthy on it after a few weeks. On the other hand, I find the McDougall diet to be extremely satisfying, and as a bonus my skin and hair (dried out by the Nevada climate for years now) have become healthy again, and I have more energy and vitality than in years. Also important is that following the McDougall diet ensures that you minimize the toxicities you get from your food (see Howard Lyman's book "Mad Cowboy" for further information on that aspect!). It really feels good to improve your health, do what is right ecologically, and even lose weight as a bonus and keep it off! Everyone should do themselves the favor of reading and trying for themselves this or another of Dr. McDougall's books.