Ah, William Banting! His was the first low-carb diet book ever written, 'Letter on Corpulence Addressed to the Public' published in 1863. The public was very keen, it became a huge success and countless people benefitted from it.
The medical profession, never keen to see their orthodoxy challenged, came down on it like a ton of bricks and frightened people away, seemingly happier with overweight and underinformed patients than fit and healthy ones. How times have changed - NOT!
I have actually read an original copy, kept in the University here. Not really a Booker prize contender, but a really significant book all the same.
All the best,
fergus