Switching to a veggie-centric diet may be good news for your waistline. According to research by Dr. Neal Barnard at George Washington University, the average person who turned to a plant-based diet under their project supervision lost about 10 pounds in the span of about 44 weeks. "The take-home message is that a plant-based diet can help you lose weight without counting calories and without ramping up your exercise routine," the physician reported. The downside? A lot of new vegetarians report experiencing some temporary bloating when making the big change to a meatless lifestyle, especially if the new diet includes an increase in carbohydrates like beans.