How Much Water Should You Drink Per Day?

Did you know we are continuously losing water from our bodies every day, primarily via sweat and urine?  To prevent dehydration, we need to drink adequate amounts of water each day. 


How much water do we need to drink every day?   There are many different opinions on how much should be consumed every day.  The standard most commonly recommended is eight 8-ounce glasses which equals about 2 liters, or a half a gallon.  However, some health experts believe that you only need to sip on water consistently throughout the day, even when you are not thirsty.   As with everything, it really depends on the individual and there are many factors which ultimately affect your need for water.

Some common questions are:

  • Can brain function and energy levels suffer if a person is dehydrated?  Mild dehydration is 1-3% of body weight lost in fluid which can be caused by exercise or heat which can impact brain function.  Typically the first sign is a headache.   Mild dehydration can also negatively affect physical performance, leading to reduced endurance.

  • What is better, Cold or room temperature water?  Drinking cooler or cold water may be beneficial because your body will expend more calories to heat the water due to body temperature.

  • Can drinking more water help me lose weight? Drinking water about a half hour before meals can reduce the number of calories you end up consuming. Overall, drinking adequate amounts of water, particularly before meals, may have a significant weight loss benefit, especially when combined with a healthy diet.

In summary, maintaining water balance in the body is essential for survival.   Trust your body to let you know when it’s time to drink more because thirst instinct is very reliable.