There are many concerns about Keto Diets. The primary one is that these diets eliminate too many healthful foods to be advisable for the general population. This diet may help you lose weight but as with any diet, the weight will come back when you return to your old way of eating. If you are diabetic or are so obese that you need to lose a large amount of weight, you should begin a ketogenic diet only under medical supervision.
The extreme carb restriction with the keto diets make it difficult for most people to stay on them. There are also common side effects including fatigue, dizziness, constipation and sleep problems. For these and many other reasons we strongly recommend that instead of choosing a Keto Diet choose a healthy long term diet solution such as the Mediterranean Diet or learn more about eating healthy in our book "Live Longer Live Healthier".