What Causes Food Cravings?

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Jul 192016
 

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We all get cravings for specific foods every now and then, and those cravings can be so strong, they almost feel involuntary, like your body is missing some nutrient it can get from a Cinnabon. This isn’t typically how cravings work, though.

As SciShow explains, cravings are a lot more psychological than they are physiological. Host Michael Aranda says that they’re usually tied to different emotional triggers, like stress. He explains:

Eating a butter frosted cupcake or a bag of salty fries releases an opioid typhoon that lights up the brain’s pleasure center and makes us feel awesome…cravings are also tied to your brain’s memory center, which explains why you might also crave a food that isn’t full of fat or sugar. Your brain could be tying that food to a happy memory or a reward, and thinking about the memory associated with that food can make you crave that food.

Marci Pelchat of the Monell Chemical Senses Center told Smithsonian magazine that there are indeed some extreme deficiencies that cause cravings, but generally, cravings aren’t our body’s way of telling us we need something. For more detail, check out the full video.

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Honey: Bacteria’s Worst Enemy

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May 292016
 

It may not look like it sitting in that cute bear bottle, but honey is a supercharged bacteria-killing powerhouse!

Sometimes while browsing the grocery story we’ll pick up an item we know we’ll be out of soon, only to open the new one before using up the old one. For me, that’s honey. There’s always an all-but-spent bottle haunting the back of the pantry like a bear-shaped ghost with unfinished business. While the natural assumption with any other sauce or spread would be to toss the past-due portion out, honey doesn’t have to suffer the same fate. It’s true what they say, honey doesn’t go bad.

This superpower has a few factors that allow honey to survive without refrigeration or other preservatives which the folks over at SciShow have laid out in fascinating detail. Honey has some surprising properties including being a supersaturated solution which means that it literally sucks bacteria dry before they can flourish and potentially cause the consumer harm. It also contains an anti-bacterial protein that protects bees from harmful diseases. That’s right, bees are making us one of the most sterile substances on the planet. I guess we shouldn’t complain about a few stings.

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How Long Would It Take To Fall Through The Earth?

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May 262016
 

Minute Physics explains how long it would take a person to fall all the way through the Earth.

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