We are literally eating ourselves to death. In the move from cooking to convenience food we have given up control of what we eat. As a result our food is heavy on sugar, fat and salt, and light on the nutrients our body needs. This is causing a hidden health crisis that will swamp our hospitals just when the baby boomers want their hip operations. Gareth Morgan and Geoff Simmons latest book cuts straight to the bone of what ails us, and what we can really do about it.