"This book was written because 999 out of every 1000 people lack proper nutrition." The author, one of American's foremost authorities on deficiency diseases, clarifies what our dietary needs are and how to satisfy them, why we need vitamins and minerals, and what can be done about widespread deficiency diseases. Medical studies cited throughout, including reference to studies exploring non-Western diets, including Japanese and Native American. Hardcover book with dust jacket. Book is in Good to very good condition. Dust jacket is in fair condition with tears in it as can be seen in photos. The binding is tight, pages are crisp and still white. Photo of author is coming off of the page as can be seen in photo.