With the arrival of 2020, many people have begun their New Year’s resolutions to get healthier and lose weight. Is “diet” soda the secret to weight loss success? Not according to the Ninth Circuit, which held last week that it is not reasonable to believe that drinking “diet” soda will help in efforts to lose weight and affirmed dismissal of a false advertising lawsuit.
In the case, Becerra v. Dr. Pepper/Seven-Up, the plaintiff alleged that the word “diet” in Diet Dr Pepper’s brand name violated various California laws, including the state’s False Advertising Law, because it falsely promised that the product would assist in weight loss or healthy weight management. The plaintiff alleged that this was false because an ingredient in the diet soda, aspartame, causes weight gain.
The district court granted defendant’s motion to dismiss without any discovery. In granting the defendant’s motion to dismiss, the district court held that no reasonable consumer would believe that the word “diet” in a soft drink’s brand name promises weight loss or healthy weight management. And, the district court held, even if a reasonable consumer would believe that, the plaintiff had not sufficiently alleged that any such promise was false or that aspartame consumption causes weight gain.