how much water should a person drink to avoid dehydration
Adequate Intake. The adequate intake is one type of dietary reference intake, or DRI, and for water, it is set at the amount needed for healthy individuals to prevent dehydration, and this level is 3.7 liters, or about 16 cups, for men, and 2.7 liters, or about 11 cups, for women.rink plenty of water to control your weight and prevent dehydration. Photo Credit Jupiterimages/Photos.com/Getty Images. Dehydration is a dangerous condition that can even lead to death, but it is usually preventable if you drink enough water.
Individuals vary widely in how much water they need. Without getting dehydrated, the people in the study took in as little as 1.2 liters of water a day and as much as 7.7 liters a day. On average older people took in less water than younger adults yet they did not have evidence of dehydration. The differences in water intake between age groups were small.