Skip to content

Factors The Change How Much Water You Need Each Day

    The human body is composed of approximately 60% water. Every day, we lose water through sweating, urination, and bowel movements. It’s important to replace the lost water by drinking fluids and eating foods that contain water. How much fluid you need each day depends on many factors, including your age, sex, weight, level of physical activity, climate, and weather conditions. This article will take a look at all the different reasons the amount of water you need each day might change and be different from other people’s needs.


    Age is one of the most important factors when determining how much water someone should drink every day. As you age, your body gets smaller and loses muscle mass. Both of these changes decrease the amount of fluid your body needs. Older adults need to be aware of how much water they drink throughout the day because it is more common for older adults to become dehydrated than younger people. One way to ensure that you get enough water is by keeping a water bottle with you throughout the day and making sure you drink enough before bedtime.


    The amount of water needed by men and women can be different because of their differences in size and physical activity. Men usually require more total body water than women do. One reason for this is that men usually have a higher percentage of muscle than women, which means they need more fluid to hydrate their muscles. Also, men’s bodies usually contain more minerals than women’s bodies do because of different hormone levels. However, depending on some of the other factors on this list some women may need to consume more water than their male counterparts.


    Your weight is another big factor when it comes to the amount of water you need to consume each day. A person who weighs 150 pounds (68.2 kg) will need more water than someone who only weighs 100 pounds (45.3 kg). Someone who weighs more usually sweats more and loses more water. Also, when you add in the number of organs and tissue matter such as muscles and fat, a person with a higher weight actually has less fluid volume than someone with a lower weight. This is why overweight people need to be particularly mindful of how much they drink every day because it’s very easy to become dehydrated.

    Level Of Physical Activity

    The amount of water someone needs to drink depends on the amount of physical activity they get. An extremely physically active person can lose 5% or more of their weight through sweat and other bodily fluids such as urine. Someone who is sedentary or does not exercise much, however, usually loses 2% or less of their body weight in water each day. So in order to make sure they are hydrated, physically active people need to drink more water than those who aren’t.

    Climate And Weather Conditions

    The climate and weather conditions in which a person lives can also affect how much water they should drink every day. Someone who lives in a hot, dry climate will probably need more water than someone who lives in an area where it’s cold or wet. This is because the average person sweats more on days that are hot and dry. It’s also important to consider how much water a person needs when they’re exposed to extreme weather conditions such as a heatwave or a snowstorm. People exposed to these types of situations would need more water than the average person in order to ensure their body stays hydrated.


    The difference in height of land between where you live and sea level has a big impact on the amount of water that is needed each day. The closer you are to sea level, the fewer liquids your body needs to intake. This is because there is less air pressure. Conversely the higher your elevation, the more liquids your body needs to intake because there is increased air pressure. So someone living in Denver, Colorado who is 5,280 feet above sea level would need to drink more liquids than someone living in Los Angeles, California who is only 235 feet above sea level.

    Food Intake

    A person’s food intake is also helpful in determining how much water they should drink every day. Different foods contain different amounts of water. An apple, for example, contains about 88 percent water. Eating dried fruits instead, such as raisins, naturally decreases the amount of water in a person’s diet. So someone who eats more dried fruits would need to drink less water than someone who eats more apples. Another aspect of food intake is salt intake. Too much salt can cause a person to retain water. This means that someone who eats too many salty foods can still feel thirsty. Even if they are already well hydrated.


    A person’s medications can also affect how much water they should drink every day. Some pharmaceuticals, such as anti-depressants, cause a person to expel more fluids through excretion. Which means it is important for them to increase their fluid intake so that they have enough liquids in their body. For example, someone who takes medication might need to drink around 3 liters of water per day. While someone who is medication-free might only need 2 liters of water per day (a general reference only).


    There are several factors that determine how much water a person should drink every day. The variables included in this article are all factors that affect this amount. A general rule of thumb is to drink approximately eight 8-ounce glasses of water per day which equals about 2 liters. It is important to note that this guideline does not apply to babies, children, pregnant women, or the elderly. If you have any questions that are specific to your situation be sure to speak with your doctor!