Water can weight lose Research in the USA found that drinking water before meals helps with weight loss because water has no calories, and that's our experience. Researchers say that drinking two glasses of water before meals to lose weight. The test is divided into two groups, those aged 48 to 12 took the test last week, between 55-75 years found that those who drank water before meals to weigh down average 15.5 pounds, while those who did not drink. water before meals to an average 11-pound weight from previous studies.