Robert Lustig's updated version of John Yudkin's original "Pure White & Deadly" is worth reading. - "The Real Truth About Sugar". And his "Fat Chance" ditto. David's "Toxic Oil" is also worth a look. If you have any trouble finding these in a bookshop, try Fishpond - good prices and post-free. Also check out Peter Fitzsimmons "The Great Aussie Bloke Slim Down".
JohnN