Weight loss tips by Ella Quittner Let’s face it: The rules of weight loss—eat less, move more, treats in moderation— are a drag. And they don’t fit with most dieters’ quick-fix, thinner-by-dinner expectations. Cue diet crutches: tricks, based on scant science, that may speed up results. So if a friend swears that munching on grapefruit gets her into skinny jeans, or a coworker credits ice water for his sleek physique, should you try it too? Not so fast. Some diet crutches are helpful, some harmful, and some won’t do much either way. We asked registered dietitians for the bottom line (“skip it,” “try it,” or “do it right”) on the most common diet crutches.