Staying hydrated isn’t just about avoiding thirst or dry mouth. Hydration supports the body’s major systems. In fact, 60 percent of the human body is composed of water. Different parts of the body, such as the brain, lungs, kidneys, heart, liver and so on, hold varying amounts of water.
Water also plays an important part in aging. For instance, how much water the human body holds decreases with age—babies are born with 75 percent of their bodies composed of water.1 The decrease in water composition over the years means older people need to drink water or other fluids consistently throughout the day to help maintain normal hydration and support overall body function.
In fact, water is the foundation of cellular function. It helps to regulate body temperatures, support normal energy metabolism and transport nutrients and oxygen throughout the body. Hydration also supports normal cognitive function, including focus, concentration, and memory. Even mild dehydration may contribute to headaches, dizziness or difficulty concentrating. Since cartilage is composed of about 80 percent water, joints and muscles also rely on hydration to function well. Cartilage acts as a buffer for the spine and the joints, and water helps keep tissues hydrated. Water acts like oil does on squeaky hinges—it helps lubricate joints, while acting as a cushion for muscles and other sensitive tissues.
When the body maintains proper fluid levels, it efficiently transports essential electrolytes, such as sodium and potassium, through the bloodstream to support normal muscle function and hydration. Electrolytes and water also need to be replenished to help the body regulate temperature. Since perspiration serves as the body’s natural cooling system, this loss of fluid needs to be replaced during and after physical activities.
Skin is the body’s largest organ and is composed of 30 percent water, which contributes to plumpness, elasticity and resiliency.2 Dry skin generally results from exposure to the elements, contact with hot water and scrubbing with soap. Sufficient water intake helps support overall hydration which is one of the many factors that contributes to healthy-looking skin. No matter the type of skin care regimen, staying well hydrated is an important part of basic skin health.
On average, healthy men require about 15.5 cups of total water daily, while women need around 11.5 cups, according to the National Academies of Sciences, Engineering and Medicine. This includes water from all sources such as beverages and water-rich foods like fruits and vegetables. However, water needs vary depending on factors such as physical activity, climate, health conditions and age.3 Simply put, the more you exercise and the hotter the climate you live in, the more water you may need.
Get to know your body and pay attention to hydration. You may notice an empowering difference!
1 https://www.medicalnewstoday.com/articles/what-percentage-of-the-human-body-is-water
