As I hope the tone of my post made clear, I'm not sure either, but I am very skeptical of the claim. There seem to be two issues here: how full you feel (which

As I hope the tone of my post made clear, I'm not sure either, but I am very skeptical of the claim. There seem to be two issues here: how full you feel (which I don't have an opinion on one way or another) and whether drinking water impedes digestion by diluting stomach acid and digestive enzymes. Yes, it would seem plausible that a large intake of water would dilute the stomach juices. However, it also seems equally plausible that the stomach regulates pH equally quickly by passing along the excess water to the small intestine (where, I believe, water is typically absorbed), just delaying digestion temporarily. I imagine different foods (whole grains vs. pasta vs. steak) must need different amounts of time to break down in the stomach. Is the stomach sensitive to when foods are ready to be passed along to the small intestine?