Weight Xtreme Keto Boost Loss Truth: There goes that word again...DIEt....those "drastic diets" are only good for quick weight loss and rapid weight gain once you get of it. These drastic diets range from the "cookie diet", lol.... All that way to "the water only diet"..... I am sure you can lose weight while on these DIEts, however the weight will be gained right back and usually with some added weight as a bonus