A low carb high fat (LCHF) lifestyle/diet doesn't totally remove all the carbohydrates (carbs) from your diet. It reduces them to a small amount. However, some people go the "whole hog" and reduce their carb intake to next to nothing (<30g) and rely on a metabolic state called ketosis to fuel the bodies needs. The evidence suggests that a low carb ketogenic diet is very effective for weight loss. Some believe weight loss is caused from a reduced caloric intake (due to satiety from protein consumption) whereas others contend it is due to a more advantageous metabolic state. For those not worried in the science of how it works, the result is the same - WEIGHT LOSS.