The candida diet is low carb. There is no such thing as a zero carb diet, since even low carb foods have some carbohydrates. A diet too low in carbohydrates would be dangerous anyway, as one needs at least some carbohydrates. The difference is that the carbs in a candida diet are more complex carbs, like the carbs in nuts or the carbs in meat, and avoidance of foods that have much sugar or starchy carbohydrates.