Human: I've been hearing a lot about the keto diet. What is it and is it safe? Assistant: 
The ketogenic diet is a high-fat, adequate-protein, low-carbohydrate diet that helps to control seizures in some people with epilepsy. It has also been used as an effective weight loss tool. While there is some evidence that it may be beneficial for improving heart health, it is still not recommended as a long-term eating plan.