Looking to lose weight and still searching for the best diet for you? Jenna Bell, PhD, RD, Senior VP, Director of Food & Wellness at Pollock Communications in New York City, cautions against diets that seem too good to be true. "If a diet promises fast, nearly overnight results and cuts out most every food group, think twice before starting such a plan," she says. "Crash diets may or may not help you lose weight, but are almost guaranteed to leave you feeling run down thanks to missing nutrients. And at the end of the day, once you stop your crash diet, the weight is likely to return." So which diets actually work and which ones should be avoided? Read on to see our list of ten of the top diets, based on recent rankings from U.S. News and World Report, as well as anecdotal reports compiled from dieters around the United States. We provide a glimpse into these popular diets and offers pros and cons for each one.