why can't we drink water after a meal?
My dietitian told me that liquid will move the food out of your stomach and through your intestines more quickly than they it should. The problem is that you won't absorb the nutrients properly and that can cause big problems. My understanding is that it's actually more harmful to drink after eating than before.
My dietician told me the same thing, no drinking 30 min before or after. In addition to washing food thru the system without time to absorb maximum nutrients, washing food out of the system too soon after eating makes us get hungry again MUCH sooner. I also keep a glass of water nearby and take a small sip if I need one. Good luck to you!