Hydration Hype
The Truth About Drinking Water: When More Isn't Better
Water has had quite the glow-up.
Once upon a time, we drank when we were thirsty. Now we carry oversized bottles everywhere, track ounces on apps and occasionally feel a tiny sense of failure when the giant tumbler sitting beside us isn't empty by lunchtime.
Staying hydrated matters. Water helps regulate body temperature, supports normal body functions and replaces fluids we naturally lose throughout the day. But somewhere between “drink more water” and the arrival of gallon-size motivational bottles, hydration started to feel like a numbers game.
Here's the part that gets lost: more isn't automatically better.
There's No Magic Number for Everyone
You've probably heard that everyone should drink eight glasses of water a day. Others insist you need a gallon. In reality, there isn't one perfect amount that works for every person.
Hydration needs can vary based on your age, activity level, overall health, climate and other factors. Food contributes water too, particularly fruits and vegetables, so the water your body receives doesn't come exclusively from your bottle.
On a hot day or after a sweaty workout, you may naturally need more than you would while spending a quiet day indoors. That's why hydration is better thought of as something responsive rather than a daily competition.
Yes, You Can Drink Too Much Water
It isn't common for healthy adults, but drinking excessive amounts of water can become dangerous. Taking in more water than the body can adequately eliminate can dilute sodium in the blood, resulting in a condition called hyponatremia. Sodium is an electrolyte involved in fluid balance as well as nerve and muscle function. Severe hyponatremia can be life-threatening.
This is particularly relevant during long endurance activities, when someone may be losing sodium through sweat while simultaneously consuming large quantities of plain water. So that enormous bottle isn't inherently healthier simply because you managed to finish i t.
And What About Electrolytes?
Electrolytes have become almost as trendy as water itself.
Sodium and potassium are among the electrolytes your body uses for functions including fluid balance and nerve and muscle function. We normally get electrolytes through food and beverages. CDC
But that doesn't mean everyone needs an electrolyte drink every time they go for a walk.
For ordinary hydration, water is generally sufficient. During prolonged sweating or demanding activity, electrolyte-containing drinks may sometimes be useful.
In other words, your everyday desk job probably doesn't require you to treat hydration like you're training for a marathon.
A Better Way to Think About Hydration
Instead of obsessing over a universal number, pay attention to context. Are you exercising? Is it extremely hot outside? Have you been sweating heavily? Are you sick? Are you thirsty? What does your urine look like?
Mayo Clinic notes that infrequent thirst and colorless or light-yellow urine can be signs that you're getting enough fluid.
Certain medical conditions and medications can also affect fluid needs, so people who have been given specific instructions by a healthcare professional shouldn't replace those recommendations with a hydration trend they saw online. The goal isn't to drink the most water. It's to give your body what it needs, when it needs it.
Maybe it's time hydration became a little less about hitting a number on the side of a bottle and a little more about paying attention to the person carrying it.
LIVE. THRIVE. REPEAT.
