There are a multitude of branded diets available on the market, promising weight loss if you follow their guidelines. They can be roughly divided into low-carb, low-fat, high-protein, and intermittent fasting categories. Each diet has its adherents and detractors, so if you are trying to choose one based on online commentary, you are in for some difficult and faith-based decisions. The truth is much simpler than that: there is no single best diet that works equally well for everyone and has the best weight-loss results hands down.