Ultrametabolism by Mark Hyman. Contributing author Kathie Madonna Swift, MS, RDN, LDN. 

UltraMetabolism offers groundbreaking insights and perspectives to the complex problem of weight issues and obesity -- and beyond. It's really "UltraHealth", outlining core principles for consideration such as inflammation and detoxification. It was also of of the first books (if not the first) to promote the idea that "adverse food reactions" (an umbrella term for food allergies and intolerances) contribute to inflammation, and that obesity is not only an inflammatory disorder but a systemic problem that must be addressed with a food as medicine approach. 

The menus Kathie created are all gluten-free and dairy-free, a pathway to healthy weight which continues to gain support in the field of medical nutrition therapy.