Unpopular FACT: Artifical sweetners do NOT make you hungry
You’ve probably heard some version of the following:
"Artificial sweeteners make you hungry."
"Sweet taste without calories confuses your brain."
"They make you crave more sweets."
You've probably heard some version of these claims before. The problem? The data keep refusing to cooperate. A new study, "Acute and prolonged effects of sweeteners and sweetness enhancers on postprandial appetite sensations, palatability, and ad libitum energy intake in humans," examined exactly this question
If artificial sweeteners really increased hunger, cravings, or caused people to eat more later, this study should have found it. It didn't. Researchers found that consuming sweeteners and sweetness enhancers did not increase subsequent energy intake, did not meaningfully increase appetite, and did not lead participants to compensate by eating more later. In other words, the common claim that "sweet taste without calories tricks your brain into overeating" continues to lack support from actual human data.
This is a great reminder that just because a mechanism sounds plausible doesn't mean it translates into real-world behavior. Humans aren't Petri dishes, and while people love inventing scary stories about artificial sweeteners, the totality of evidence continues to show that replacing sugar with low- or no-calorie sweeteners generally helps reduce calorie intake and can support fat loss.
Your body isn't sitting there thinking: "Wait a second... that was sweet but not enough calories. Better order a large pizza." It doesn't work that way. This study showed people actually ate slightly less calories when consuming artificial sweeteners. This is in alignment with other studies demonstrating that artificial sweeteners decrease energy intake and reduce body fat in tightly controlled human RCTs (PMIDs: 40913681 & 39606579)
As always, test hypotheses against data, not vibes.