Initially, Nascher encountered resistance from his colleagues. He had difficulty finding a publisher for his 1914 book, "Geriatrics: The Diseases of Old Age and Their Treatment" (Philadelphia: P. Blakiston's Son & Co). The book has three major sections: physiologic old age, pathologic old age and hygiene and medicolegal relations. Nascher concluded, as do most geriatricians today, "senescence is not due to any one cause." "isease is not (always) a causative or even an essential factor." The "Canadian Medical Association Journal" reviewed the book in 1914 finding the book most interesting and valuable. The 517-pages book was reprinted in 1979 by Ayer Publishers.