Every time I see people shelling out serious bucks for "alkaline water" at the health-food store, I want to roll my eyes--the only time pH matters when it comes to water is in a swimming pool, right? Maybe not. This article does a great job of explaining the "science" behind a diet popular in Hollywood: one which encourages foods with a high pH ("alkaline") and forbids those with a low one ("acidic"). Whether or not you believe the hype, the philosophy's general recommendations are solid: go heavy on plant-based foods and water, go easy on animal proteins and fried stuff. Read on for more details.