How Long Can A Person Fast? The human body is remarkably fragile—you can survive only minutes without air and only days without water. But when it comes to food, the limits change dramatically. That’s because excess body fat can be converted into the fuel needed to stay alive. In extreme cases, humans have gone more than a year without eating. In this week’s article, I look at what those extremes can teach us about metabolism, from the longest medically supervised fast on record to my work with Manuel Uribe, the heaviest man ever documented. His response to the Zone diet and high-dose omega-3s offers a powerful example of what Metabolic Engineering® can achieve when it comes to controlling inflammation and restoring metabolic balance. | 
