The FTC did a study and found that 55% of all weight-loss advertisements made claims that were most likely false or didn't provide any proof. Incidentally, the weight-loss industry is worth $30 billion a year, mostly made from false advertising awashed with words like "melt away," "no diet or exercise is required", and "miracle" substances, as well as "seek and destroy" fat.

The CDC gives the best tips for weight-loss:

• "It's natural for anyone trying to lose weight to want to lose it very quickly. But evidence shows that people who lose weight gradually and steadily are more successful at keeping weight off. Healthy weight loss isn't just about a 'diet' ... It's about an ongoing lifestyle that includes long-term changes.