For years, Silicon Valley has tried to engineer methods for living better, longer and easier, with mixed results. Some have even opted out of real food altogether, instead relying on products like Soylent — a bland but nutrient rich liquid. But for those looking to not just simplify their eating, but also lose weight and curb their appetite, the ketogenic diet ("keto" for those in the know) has become something of a cult-favorite eating plan, even attracting the likes of the Kardashian sisters and LeBron James.