Supplements · Sweeteners
non-nutritive sweeteners increases appetite
Part of: • non-nutritive sweeteners
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: All trials, pooled (Meta-analysis)
How the studies fall
What the evidence shows
The 'sweetness without calories confuses the body and drives hunger' idea has **weak human support.** Controlled trials generally find that non-nutritive-sweetened drinks produce appetite, satiety and 24-hour energy intake similar to sugar or water, with unchanged leptin. There are subtle signals — one study found NNS beverages raised the *reinforcing value* of sweet snacks, and a blend trial foun
The evidence (7)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Movahedian et al. 2024 · Crit Rev Food Sci Nutr | meta-analysis | contradicts | moderate | GRADE MA of RCTs: NNS did not raise serum leptin (appetite-regulating hormone) and reduced body weight. |
| Farhat et al. 2019 · Nutrients | RCT | contradicts | moderate | Three-arm crossover: stevia did not increase appetite or food intake vs sugar/control. |
| Rogers et al. 2016 · Int J Obes | meta-analysis | contradicts | moderate | SR/MA: NNS do not increase energy intake or body weight vs sugar/control — no appetite-stimulating effect at the intake level. |
| Almiron-Roig et al. 2023 · Appetite | RCT | mixed | moderate | SWEET beverages RCT (n=60): sucralose-ace-K blend raised prospective food-intake ratings vs sucrose, but small magnitude and no difference in 24-h energy intake. |
| Tey et al. 2017 · Int J Obes | RCT | mixed | moderate | RCT (aspartame/monk-fruit/stevia vs sucrose): NNS beverages showed incomplete energy compensation but no clear increase in appetite/intake. |
| Overduin et al. 2016 · Appetite | RCT | contradicts | moderate | Crossover RCT: replacing sucrose with erythritol did not change GLP-1/PYY, hunger/satiety or subsequent energy intake and sucrose preference. |
| Casperson et al. 2017 · Appetite | RCT | supports | moderate | Crossover RCT: after a non-nutritive-sweetened beverage, sweet snacks became more reinforcing (higher operant responding) than after a sugar beverage. |
Disagree, or know a study we missed?
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Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.