It's critical to pick the right diet from the first time

A study links between failing diets & weakness in immune system. In other words, if you loose weight, then gain it, then loose it and so forth, this weakens your immune system. That's why it's important to not become a guinea pig for all these imperfect diets out there. There is only only perfect diet which the diet that our creator has for us; that's why you should eat balanced, natural (whole) foods in moderation.