'Letter on Corpulence' is arguably the most important Diet Book ever written.Long before the Atkins Diet and the rush of low-carb diets that followed came a book written - not by Doctors or Nutritionists - but by a humble Victorian Undertaker: William Banting.Banting's book would pave the way for many of the diets that followed.In this new edition of Banting's 1864 Classic, diet author Will Meadows puts the importance of Banting's work into context and discusses which weight loss methods remain relevant today.