The Low-Carb Diet Craze

A diet is more than a fad. In fact, it's more than a diet--when skinny people are on it. Yet there they are, jogging into Noah's Bagels in Santa Monica, Calif., proudly ordering bagels with the innards scooped out, disposed like toxic waste and replaced with full-fat cream cheese. In Chicago restaurants, the unpaunched are gorging on porterhouse steaks but banishing the baked potato back to Idaho. And Jennifer Aniston has been publicly chastised by her former trainer, who thinks Aniston's low-carb, high-protein diet is too extreme. When even the scrawniest cast members from Friends are on a diet, something is...