I have this book. It has a lot of good information in it. He recommends 3 meals a day, so perhaps that in itself is not for everyone. But he has a good knowledge of and focus on leptin; also in terms of alcohol, candida and other drugs. He also covers inflammation, metabolism, sleep, exercise, hormones, cancer and more. He is a nutritionist and covers subjects pretty thoroughly.
I am glad you brought up leptin, as I have not looked at this book for some time, and with the new information I have received in the last year, it warrants another viewing. The way he covers female hormones and life cycle in terms of leptin is pretty in depth. Look for it in your library at least.