Diet sodas: New study finds they work as well as water for weight loss

The tea on diet drinks

Real talk: we’ve all heard the rumors that diet sodas are basically just as bad as the sugary stuff, but a massive new study just dropped, and the vibes are looking different. Researchers at the University of Liverpool just wrapped up a 104-week trial—which is like, forever in science years—comparing non-nutritive sweetened (NNS) drinks to plain old water for weight management.

What went down

The study, titled the SWITCH trial, followed 493 adults who were already working on a weight management program. They split the group up: half drank water, and half drank commercially available diet sodas containing sweeteners like aspartame, sucralose, and acesulfame-K. The result? Both groups saw similar outcomes in losing weight and keeping it off over the two-year period. No cap, the diet soda drinkers did just as well as the water drinkers.

Busting the myths

There’s been a lot of discourse lately—especially from the World Health Organization—suggesting that sweeteners might mess with your appetite or cause metabolic drama. But this study didn't find any evidence to support those fears. The researchers noted that these drinks didn't cause metabolic harm or interfere with how people regulate their hunger.

It is worth noting that while the study was funded by the American Beverage Association, the researchers claim they kept full control over the analysis. This is definitely a W for anyone who struggles to give up their soda fix while trying to hit their health goals.

Why it matters

This is a major deal because it provides the long-term, rigorous evidence that’s been missing from international health debates. It suggests that swapping sugar-sweetened drinks for diet versions is a legit tool for weight management, offering an alternative that doesn't just feel like drinking plain water for two years straight.