In September, Reebok was ordered to refund $25 million to customers because its advertising promised — without adequate evidence — that the company’s EasyTone shoes could firm users’ butts and legs with every step. But of course, that’s only the latest multimillion-dollar settlement in a long line of misleading or unfounded marketing claims. Over the past century, Americans have been sold countless too-good-to-be-true products, including cancer-fighting electronic zappers, “sugar” that’s not sugar and “purifiers” that add chemicals to water. Here, we highlight 14 of the most notorious examples.