No, they share some elements of carbohydrate-restriction, but they are very different overall. Firstly, ketogenic diets include a variety of animal and plant-based foods. On the other hand, zero carb diets completely eliminate all sources of carbohydrate and specifically focus on animal proteins. There is a growing amount of data on the benefits of keto-style diets, but as yet there is very little on zero-carb. As always with nutrition, we should be open-minded and this does not mean such diets can’t be healthy. At this time, ketogenic diets have a much stronger evidence base.