With a summer of intense heat upon us,
hydration is more important than ever. If you are not taking in enough fluid to
produce adequate sweat on a hot day, you may be more vulnerable to heat stroke.
Dehydration can be caused by extreme heat, but it can also exacerbate other
heat-related conditions such as heat cramps.
اضافة اعلان
So, taking in liquids is crucial, but hydration can
go beyond simply drinking water. The popular belief that we all need to be
drinking eight cups a day to be truly hydrated persists, though it has been
debunked again and again.
“There’s really no data behind the eight glasses of
water a day thing,” said Dr Dan Negoianu, a nephrologist at the
University of Pennsylvania. For example, “just because your urine is dark, that doesn’t prove
that you’re dehydrated.”
Being hydrated simply means consuming enough fluids
to the point where you are not thirsty, Negoianu said, and that amount varies
for everyone.
There are plenty of things besides plain water that
will keep you hydrated, experts say: These include the foods and drinks that
appeal to you, the things that will keep you consistently reaching for them.
Here are a few suggestions.
Look to your
favorite fruits, veggies, and drinks
“We think that we need to drink a lot of water all the time because we
hear that all the time,” said Tamara Hew-Butler, a sports medicine scientist at
Wayne State University who specializes in fluid balance. “You gotta drink your
eight glasses — hydrate, hydrate, hydrate.”
But any food or
drink that has fluid content will be hydrating, she said: “Your body doesn’t
care where hydration comes from, it just needs fluid.”
Fresh fruits and
vegetables are ideal sources because not only do they tend to hold high water
content, but they also have fiber, which provides other benefits for your diet
and health.
Melons, such as watermelon, honeydew, or cantaloupe, are especially
juicy. Strawberries, oranges, grapes, cucumbers, and celery are also packed
with water.
Beverages of all
sorts can be hydrating. Juice, milk, tea, and coffee each contain fluids that
your body can use. Drinks with high sugar content might not be the best
nutritional choice, but research shows that sugar-sweetened beverages are just
as good as water at delivering fluids to your system. In the heat of summer, of
course, frozen desserts such as ice pops and sorbets are handy vessels for
liquid consumption.
“You can
achieve, and exceed, your daily fluid requirements through the ingestion of
beverages and high moisture foods without drinking a single glass of plain
water,” Hew-Butler said in an email.
Caffeinated drinks can be hydrating, too. Though
caffeine is often deemed a diuretic, or dehydrating substance, research shows
that consuming coffee or other caffeinated beverages has about the same
hydrating or dehydrating effects as if you just drank water — especially if you
are a regular caffeine consumer.
If you are
having a significant amount of caffeine after a long period without it, you
might experience a small blip of dehydration, said Kelly Hyndman, a researcher
at the University of Alabama at Birmingham who studies kidney function and
fluid retention. But otherwise, caffeine will not cause dehydration, she added
— at least not at the levels people typically consume it.
Do not be afraid of
savory foods
You have probably heard that salty foods are dehydrating, but that is
not strictly true, Hyndman said.
Our bodies are
constantly looking to maintain a salt-to-water balance, which they do with the
help of a number of hormones. One of the most prominent of these is the
antidiuretic hormone, or ADH.
When we consume
a lot of salty foods at once, our brains will secrete ADH, which in turn tells
our kidneys to hold onto water, preventing us from peeing out excess fluid. At
the same time, the brain secretes another hormone, vasopressin, which is linked
to feelings of thirst. Together, all these hormones signal that you need more
fluids. Consuming too many salty foods is only an issue if you are also
ignoring your thirst cues, Hew-Butler said.
If you are looking for savory foods that are
hydrating, olives and pickles are acceptable choices, though it is rare that
people consume those in large quantities. Soup, especially with water-based
broths, can also help you get your fill of water.
But what is actually dehydrating is alcohol.
“
Alcohol suppresses ADH,” Hyndman said. So when you consume it, “you don’t have
this hormone telling your kidney to reabsorb water” and any fluids you consume
will go straight through you.
Make sure kids, the
elderly, and those with medical needs get their fill
“Most of us who say we’re
dehydrated probably aren’t,” Hyndman said. While there are probably some people
who are walking around a little dehydrated, she added, the majority of folks
are adequately hydrated or even a little overhydrated. If you have complained
of having a small bladder, or you are just peeing more often than you would
like, maybe you do not need to be consuming so much fluid — it is just flowing
through you.
Those who need to be most diligent about actively
hydrating are children, older adults and people with underlying medical
conditions, Hyndman said.
The rest of us simply need to have a drink or eat
foods full of fluids when we are thirsty, Hew-Butler said, and trust our
instincts. “We don’t need to overthink it,” she said.
“I think the ‘drink when you’re thirsty rule’ is one
that’s hard to argue against,” Negoianu said, barring medical conditions or
ultra-harsh environments that might cause abnormal water loss. “When it comes
to the amount of water you need, it’s like Goldilocks and the Three Bears.”
Just as Goldilocks had to decide for herself which porridge was just right,
every person has to find the hydration level that is just right for them and
their situation.
Read more Health
Jordan News