With more than 60 percent of American adults considered overweight and one-third of all American adults considered obese, it’s no wonder many are trying to change their diets and lose weight. In fact, in the United States, we spend about $60 billion a year on weight-loss products and programs. With approximately 75 million people a year trying to shed extra pounds, that’s about $800 per person. But while many of the products sold to dieters can help make a significant difference in shedding those excess pounds, many people may not realize the toll those products could be taking on their teeth.