comes from the Adventist Health Study. Twenty thousand men and women were studied. Those who drank five or more glasses of water a day had about half the risk of dying from heart disease compared to those who drank two glasses or less daily. About half of the cohort consisted of vegetarians, so they were also getting extra water by eating more fruits and vegetables. As in the Harvard study, this protection remained even after controlling for other factors, such as diet and exercise, suggesting that water indeed was the cause, perhaps
