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Why You Get Diarrhea When You're Hungover

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If your hangover mornings involve a lot of time sitting on the toilet, you're not alone. In addition to making you puke your guts out, drinking too much can also give you massive diarrhea the next day. Why? Thrillist talked to a gastroenterologist about the hangover poops, and found that it's a pretty common phenomenon, one caused by a combination of unusually fast-moving digestion.

When you drink, Urvish Shah told the site, alcohol increases what's called gut motility, the contractions that move food along your gastrointestinal tract. Combine this with the fact that booze inhibits vasopressin—the hormone that regulates water retention and prevents your kidneys from immediately dumping whatever liquid you drink into your bladder—and suddenly your guts have become a full-blown water slide.

All those cocktails take a fast-paced thrill ride down to your colon, where your gut bacteria throw a feast. The result is a bunch of gas and diarrhea you don't usually get when food and water are passing through your system a little more slowly. And because it's all rushing through you so fast, the colon isn't absorbing as much liquid as usual, giving you even more watery poops. If you haven't eaten, the extra acidity in your stomach from the booze can also irritate your stomach lining, causing—you guessed it—more diarrhea.

The more concentrated form of alcohol you drink, the worse it's going to be. If you really want to stay out of the bathroom the morning after that party, go ahead and take it easy on the shots. Because beer is so high in carbohydrates, though, Thrillist warns that that will cause gas and poop problems too as the bacteria in your gut start going to town on the undigested carbs that make it to your colon.

All in all, the only way to avoid a post-alcohol poop is to just stop drinking quite as much. Sorry, folks. If you want to rule Saturday night, you'll have to deal with the Sunday morning runs.

[h/t Thrillist]

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Animals
Owning a Dog May Add Years to Your Life, Study Shows
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We've said that having a furry friend can reduce depression, promote better sleep, and encourage more exercise. Now, research has indicated that caring for a canine might actually extend your lifespan.

Previous studies have shown that dog owners have an innate sense of comfort and increased well-being. A new paper published in Scientific Reports and conducted by Uppsala University in Sweden looked at the health records of 3.4 million of the country's residents. These records typically include personal data like marital status and whether the individual owns a pet. Researchers got additional insight from a national dog registry providing ownership information. According to the study, those with a dog for a housemate were less likely to die from cardiovascular disease or any other cause during the study's 12-year duration.

The study included adults 40 to 80 years old, with a mean age of 57. Researchers found that dogs were a positive predictor in health, particularly among singles. Those who had one were 33 percent less likely to die early than those who did not. Authors didn't conclude the exact reason behind the correlation: It could be active people are more likely to own dogs, that dogs promoted more activity, or that psychological factors like lowered incidences of depression might bolster overall well-being. Either way, having a pooch in your life could mean living a longer one.

[h/t Bloomberg]

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Live Smarter
Not Sure About Your Tap Water? Here's How to Test for Contaminants
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In the wake of Flint, Michigan's water crisis, you may have begun to wonder: Is my tap water safe? How would I know? To put your mind at ease—or just to satisfy your scientific curiosity—you can find out exactly what's in your municipal water pretty easily, as Popular Science reports. Depending on where you live, it might even be free.

A new water quality test called Tap Score, launched on Kickstarter in June 2017, helps you test for the most common household water contaminants for $120 per kit. You just need to take a few samples, mail them to the lab, and you'll get the results back in 10 days, telling you about lead levels, copper and cadmium content, arsenic, and other common hazardous materials that can make their way into water via pipes or wells. If you're mostly worried about lead, you can get a $40 test that only tells you about the lead and copper content of your water.

In New York State, a free lead-testing program will send you a test kit on request that allows you to send off samples of your water to a state-certified lab for processing, no purchase required. A few weeks later, you'll get a letter with the results, telling you what kind of lead levels were found in your water. This option is great if you live in New York, but if your state doesn't offer free testing (or only offers it to specific locations, like schools), there are other budget-friendly ways to test, too.

While mailing samples of your water off to a certified lab is the most accurate way to test your water, you can do it entirely at home with inexpensive strip tests that will only set you back $10 to $15. These tests aren't as sensitive as lab versions, and they don't test for as many contaminants, but they can tell you roughly whether you should be concerned about high levels of toxic metals like lead. The strip tests will only give you positive or negative readings, though, whereas the EPA and other official agencies test for the concentration of contaminants (the parts-per-billion) to determine the safety of a water source. If you're truly concerned with what's in your water, you should probably stick to sending your samples off to a professional, since you'll get a more detailed report of the results from a lab than from a colored strip.

In the future, there will likely be an even quicker way to test for lead and other metals—one that hooks up to your smartphone. Gitanjali Rao, an 11-year-old from Colorado, won the 2017 Young Scientist Challenge by inventing Tethys, a faster lead-testing device than what's currently on the market. With Tethys, instead of waiting for a lab, you can get results instantly. It's not commercially available yet, though, so for now, we'll have to stick with mail-away options.

[h/t Popular Science]

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