This Is The Only Real Way To Tell If You're Dehydrated

Nothing affects the body from head to toe quite like dehydration. There are a few ways to tell if you could use an extra glass of water—dry skin, a pounding headache, or fatigue are familiar signs for many. However, a recent study has shown that when it comes to measuring dehydration, we've been getting it all wrong.

A recent study decided to investigate how this plays out in care homes, as the elderly are often more susceptible to getting dehydrated. They went about all the normal practices that most people use when diagnosing dehydration—asking how the patients were feeling, looking at their eyes and mouths, and measuring blood pressure, for example.

These results were compared to the "gold standard" of dehydration measurements: a blood test, focused on serum osmolality, that's known for its accuracy. After comparing the results of the common tests with the blood test, researchers found that the common tests were way off, totally missing the mark on how dehydrated people actually were.

In fact, the results were so off that researchers suggest taking those measures out of medical practices completely.

Missing the signs of dehydration can have some serious consequences. Dehydration can be at the root of plummeting energy levels and problems like allergies or asthma. For athletes and hot yoga regulars, staying hydrated is key to fueling performance.

This may not come as too much of a shock, but the easiest way to prevent dehydration is by remembering to drink water. While there's no set recommendation of how much water to have each day, the CDC typically advises it should be somewhere around 90 and 125 ounces.