Sometimes dehydration occurs for simple reasons: You don't drink enough because you're sick or busy, or because you lack access to safe drinking water when you're traveling, hiking or camping.
Everyone’s water needs are different, and some people will be more at risk of dehydration than others, particularly those who:
Mild to moderate dehydration can usually be reversed by drinking more fluids, but severe dehydration requires immediate medical treatment.
If you are at risk of dehydration, don’t wait until you notice symptoms before you take remedial action. Actively prevent dehydration by drinking plenty of water.
If you are concerned that you are not drinking enough water, speak with your doctor or a registered dietitian, who will help you determine the amount of water that's right for you.