Our water intake have something to do or can help us loss weight. It was a standard weight loss advice until now. The journal Obesity reports drinking water really does flush fat. In a study of women who upped their water consumption to one liter a for a year, researchers credited five pounds of their weight loss to the water. Confirming for the first time an association between water and weight loss. Well-hydrated cells may boost metabolism, says study author Jodi Stookey, Ph. D., of the Children's Hospital Oakland Research Institute.