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  • Oh my God, we've been out here for fifteen minutes

  • We need to be hydrating! Everybody drink up.

  • Actually, the risk of dehydration is way overblown.

  • (chuckling)

  • You're gonna tell me hydrating is bad?

  • Yeah, right, take a lap.

  • Oh, I'd never make it all the way around.

  • In America, we've become obsessed with the dangers of dehydration.

  • People think that if they're not constantly drinking water,

  • they risk death.

  • You're dehydrated.

  • And you're dehydrated.

  • And, oh my God, you're practically a mummy.

  • But that fear is totally baseless.

  • Yeah, right, bub.

  • Everyone knows you have to drink eight glasses of water a day.

  • Yeah, everybody "knows" that, but it's not true.

  • No study has ever shown or even claimed that.

  • It's just something people say.

  • Really?

  • Now you tell me.

  • (sarcastic chuckle) Water prevents cramps.

  • Oh, where'd you hear that?

  • From my coach.

  • And I heard it from my coach,

  • and he heard it from his coach, and so on.

  • Well, you didn't hear it from science,

  • 'cause science says that ain't true.

  • Well, how much water am I supposed to drink?

  • Well, you can just drink when you're thirsty.

  • That's crazy, you're a crazy person.

  • Who are you?

  • Oh, Patty, this is Tamara Hew-Butler.

  • She's a professor of exercise science at Oakland University.

  • Our bodies already possess an extremely sensitive measure of dehydration.

  • It's called thirst.

  • As long as we drink when we feel thirsty,

  • we really won't dehydrate.

  • That's how humans have done it for millions of years,

  • and it's worked out fine.

  • The fact is, truly dangerous levels of dehydration

  • are incredibly rare and only occur in cases

  • of extreme sickness or isolation.

  • As long as you have free access to water

  • and you drink when you're thirsty,

  • you'll be fine.

  • Then why do I do this to myself?

  • Hmm, maybe because beverage companies have spend decades

  • drowning us in ads like these.

  • (announcer) Hardworking hydration, keep at it.

  • Hydrate the hustle.

  • G2 from Gatorade,

  • the low-calorie, off-field hydrator.

  • Lucozade Sport hydrates and fuels you better than water.

  • 'Cause the more water you drink, the better you feel.

  • Drink more water!

  • These companies have consistently portrayed dehydration as a serious threat

  • for one, simple reason -- it gets us to drink more.

  • The International Bottled Water Association publishes a hydration calculator

  • that can recommend you drink two liters of water a day.

  • Dasani tells you that hydration is healthy,

  • so drink up, preferably Dasani.

  • Paid spokesman Dustin Pedroia

  • says he always hydrates with Vita Coco

  • because it prevents cramps, even though it doesn't.

  • And in "Runner's World" magazine,

  • Gatorade ran an ad masquerading as an article titled "Hydration 101."

  • It included tips like "drink early and often,"

  • "don't wait until you feel thirsty"

  • and "always drink sports drinks."

  • But that's all real science, right?

  • Ah, here's where it gets sticky.

  • That ad was sponsored by the Gatorade Sports Science Institute,

  • which was founded by Gatorade in 1985.

  • Its scientific mission?

  • To discover exciting new reasons

  • people should drink their product.

  • Our unbiased study found

  • that people should drink a lot of Gatorade.

  • Terrific work! Alert the media!

  • We also may have found a cure for cancer.

  • Was it Gatorade?

  • Damn it!

  • Get back to me when it's Gatorade!

  • Gatorade also sponsors sports science research at universities across America,

  • and this can influence their findings.

  • Money, money... ♪

  • The American College of Sports Medicine once recommended...

  • When exercising, you should drink as much as tolerable.

  • Money, money... ♪

  • It's all about the money

  • Other companies soon followed suit.

  • Evian's parent company founded Hydration for Health,

  • a group that "promotes healthy hydration habits by sharing scientific research."

  • Important research, everybody!

  • Drink Evian!

  • Science says so.

  • Oh, I gotta tell the Tots about this.

  • And, after decades of bad science and marketing,

  • we now believe dehydration is a dire threat.

  • Gotta drink, drink or I'll die!

  • Well, it's not like drinking

  • too much liquid's gonna kill anybody.

  • Actually, that's exactly what it can do.

  • All of this scaremongering over dehydration has created an entirely different problem: overhydration.

  • Phooey, you drink hard, you pee hard.

  • Not if you're exercising.

  • Exercise stops you from peeing

  • by putting your body in water conservation mode.

  • And if you overhydrate then,

  • all that extra fluid has nowhere to go.

  • Holy crow!

  • It's called exercise-associated hyponatremia,

  • and it can be deadly.

  • In a study of the 2002 Boston Marathon,

  • nearly one-sixth of the runners studied

  • were found to have hyponatremia.

  • These runners drank so much liquid during the race,

  • that by the finish line, they had actually gained weight.

  • And she wins by a belly!

  • Okay, now, that's a joke,

  • but this is a serious problem in sports.

  • At least 12 athletes have died from overhydration.

  • No, that's terrible.

  • It's true. Overhydration is dangerous.

  • Most researchers, including myself,

  • think that it's the marketing of the beverage industry

  • that's responsibility for this surge

  • in fluid overload hyponatremia.

  • So, I've been putting the kids in danger?

  • No, Patty,

  • death by hyponatremia is extremely rare.

  • Just give the kids free access to water.

  • Let them drink when they're thirsty,

  • and don't treat these ads as science.

  • I don't deserve to wear this uniform.

  • Hey! You made my Patty cry.

  • Kids, let's practice some tackling drills.

  • I've got just the dummy.

  • Ah, no wait!

  • The truth about concussions is really interesting!

Oh my God, we've been out here for fifteen minutes

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B2 US drink dehydration hydration water thirsty patty

Adam Ruins Everything - Why You Don't Need 8 Glasses of Water a Day

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    Monica posted on 2016/11/08
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