Amayze life keto however, make sure to moderate the rest of the day with the right food. the following information should be helpful when it cout of the thousands of diets that have been written over the years 5 really stand out as being the most effective. one of them, weight watchers, has been around for over 40 years, while the others have been introduced more recently. one of them, the 9th law diet, is only a year old. although each diet has philosophical differences on the best way to lose weight, they all are effective and have shown to be safe. here is a summary of each diet. each summary includes information about the general philosophy, type of foods, overall expense of each diet, as well as the most commonly attributed pros and cons.