Starting a new diet - but especially the ketogenic diet or Keto Diet - is not something that should be undertaken lightly. Making abrupt shifts in the way you eat has a way of shocking your body that you need to be prepared to deal with. Starting a ketogenic diet is particularly risky because it can be hard on your kidneys. When your body starts burning its fat stores, you may shock your organs to a dangerous extent. This is especially true if you are already obese and have other health issues, like diabetes or high blood pressure. Therefore, you should start the ketogenic diet slowly, monitoring changes in your body if and when they occur. Only begin the diet under the guidance of your doctor. Otherwise, know that the ketogenic diet is a healthy way to make some changes in your mood, waistline, and energy levels - all by just cutting a few carbs.