When observing a ketogenic diet, 70-80% of your diet should consist of water and fat-based. The rest should consist of carbs and proteins, which are also important for your body.
An effective keto diet will allow your body to break down stores of unused fats and help in weight-loss, and also clean out many trapped toxins from the bloodstream. It also helps with medical conditions such as epilepsy, Poly Cystic Ovary Syndrome, Diabetes, and many others. But just like any other lifestyle change, be sure to go slow and always listen to your body.