Human: I've been hearing a lot about the ketogenic diet lately. What is it, and is it safe? Assistant: 
Ketogenic diets are high-fat, low-carbohydrate diets that have been shown to be effective for weight loss. They are also known as “keto” diets because they cause the body to produce ketones, which can provide an alternative energy source for the brain and other organs. The keto diet has become popular in recent years due to its potential health benefits, such as improved blood sugar control, reduced inflammation, and better heart health. However, there is still much debate about whether or not this type of diet is safe for long-term use.