What Does Gum Disease Have to Do With Alzheimer’s?

What Does Gum Disease Have to Do With Alzheimer’s?

[INTRO ♪] Regular brushing and flossing are vital to the health of your teeth and gums. We all know that—it’s been drummed into our heads since we first picked up a toothbrush. But brushing your teeth might not just be good for your oral health: It could help protect your brain, too. Because according to […]

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Why Do Bats Carry So Many Dangerous Diseases?

Why Do Bats Carry So Many Dangerous Diseases?

[♪ INTRO] One fifth of all mammal species today are bats. And that’s awesome, because they help us out in all sorts of ways. Like, they pollinate a lot of plants, help regrow forests and control pests, and their poop is pretty excellent fertilizer. Plus, they’re just really cool. Some of them can sense magnetic […]

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How Liver Problems Can Lead to Brain Disease

How Liver Problems Can Lead to Brain Disease

[INTRO ♪ Your brain works together with the rest of your body in lots of different ways. If things go wrong with some organs, like if your heart stops pumping, your brain’s obviously going to have a bad time. But sometimes the connection is a little less straightforward. Take the liver, for example: you need […]

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Is COVID-19 a Pandemic? | March 2020 Update

Is COVID-19 a Pandemic? | March 2020 Update

Thanks to Brilliant for supporting this episode of SciShow. Go to Brilliant.org/SciShow to learn more. {♫Intro♫} This video was filmed on March 3 2020. If we have a more up-to-date version of it, it will be linked at the top of the description, and right up there. Let’s go over some terminology to start. SARS-CoV-2 […]

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Endometriosis: When Uterine Tissue Goes Rogue

Endometriosis: When Uterine Tissue Goes Rogue

[♪ INTRO] If you’ve ever had one, you know that periods can be uncomfortable, to say the least. While the uterus is busy breaking down and spitting out tissue, the rest of the body is ushering in fatigue, headaches, diarrhea, vomiting, and of course, cramps. And while cramps are always crummy, some are actually debilitating. […]

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The “Disease” That Struck Medieval Church Organs

The “Disease” That Struck Medieval Church Organs

Thanks to Brilliant for supporting this episode of SciShow. Go to Brilliant.org/SciShow to learn more. [ ♪INTRO ] During long, cold winters in medieval Europe, there was something weird going on with church organs. Across the continent, some of these instruments were getting what people at the time called “tin leprosy” or “tin pest.” The […]

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When Insomnia Becomes Deadly

When Insomnia Becomes Deadly

[ intro ] We’ve all been there — tossing and turning all night for absolutely no reason. But for the vast majority of people, insomnia can’t actually kill you. In one very rare, very specific case, however, not only is insomnia deadly — it’s lurking in your genes from the time you’re born. Familial fatal […]

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Why Don’t Humans Get Heartworm? (Spoiler: We Do)

Why Don’t Humans Get Heartworm? (Spoiler: We Do)

[♪ INTRO] If you’re a dog owner, chances are you’ve heard of heartworm disease. And if you aren’t familiar with it, well, brace yourself for some serious nightmare fuel. It’s basically exactly what it sounds like: an infestation of worms, collectively known as Dirofilaria, in a dog’s heart. These parasitic nematodes are transmitted by mosquitoes, […]

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6 Dangerous Diseases Hiding in U.S. Backyards

6 Dangerous Diseases Hiding in U.S. Backyards

♩ Microbes are invisible, so it’s easy to forget that they’re all around us, all thetime. They’re in everything we eat and drink, and on every surface that we touch. A lot of microbes don’t hurt us, but there are some that really can. And even deadly pathogens are closer than you might expect: lurking […]

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How 6 Rare Diseases Are Changing Everyday Medicine

How 6 Rare Diseases Are Changing Everyday Medicine

SciShow is supported by Skillshare. Right now, Skillshare is offering SciShow viewers two months of unlimited access to over 20,000 classes for free. Click on the link in the description to learn more. [♩ INTRO] Individually, rare diseases are… rare. In the US, we usually say that a disease is rare when it affects fewer […]

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