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u/mveaonReddit22d ago
Common rationale for drinking water at meals is that it physically stretches stomach, triggering fullness so you don’t eat too much. But new study found no support for this. Instead, for every additional 100 grams of water drunk, people ate about 39 more grams of food – roughly 49 more calories.
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Analysis Summary
A Cornell study found that drinking water with meals doesn't suppress appetite as commonly believed — instead, people who drank more water actually ate more food, gaining roughly 49 additional calories for every 100 grams of water consumed. This challenges a diet recommendation that some health experts and popular sources promote, based on the idea that water stretches the stomach and triggers fullness signals. However, this reasoning isn't universally accepted. The research was conducted in controlled laboratory settings, so the real-world effect may vary depending on individual factors and drinking patterns.
Claims Analysis (3)
“Common rationale for drinking water at meals is that it physically stretches stomach, triggering fullness so you don't eat too much.”
This accurately describes the widely-held conventional wisdom about water and appetite suppression. Cornell research confirms this is indeed the common belief being tested.
“New study found no support for this.”
Cornell Chronicle, Nautilus, and Fingerlakes1 all confirm the study found drinking water at meals does NOT suppress appetite as commonly believed.
“For every additional 100 grams of water drunk, people ate about 39 more grams of food – roughly 49 more calories.”
The specific quantitative finding is reported consistently across multiple outlets citing the Cornell research. The calorie calculation (39g food × ~1.25 cal/g ≈ 49 calories) checks out mathematically.
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