'My 600-lb Life' weight-loss debate: no sugar, no carb gluten-free diet no good?

 Think weight-loss and what's the first diet tip that comes to mind? Trending among celebrities is the gluten-free diet which cuts carbs and sugar. The TLC reality TV show "#My 600-lb Life" pushes such a sugar-free, carb-free diet after bariatric surgery. But carb lovers, don't pass up the pasta just yet. Health experts are saying that no carb, no sugar diets are no good for shedding obesity. Here's the tasty truth behind their surprising advice. '