These ubiquitous diets enjoy short-term popularity, but fade just as quickly as they appear. The reason that they fade away so quickly is that they are not viable over the long-term, even if they do result in weight loss over the short-term.Slim Fit 180 Try some whipped butter. Some people do not want to cut back on butter or replace it with a butter substitute. There are those who really just love real butter. Luckily, you can still eat butter and lose weight.