Common Scientific Myths That You Definitely Believed

As you get older, some things you believed as a kid start to sound more and more ridiculous. But every now and then you discover that something you believed with all your heart was just a common misconception. 

These Redditors decided to share their own moments of discovery that shattered their worldview. We confirmed the facts, check sources for more information.

That the left ring finger, where people usually wear love-related rings, is the only finger in the body that has a vein that connects directly to the heart via the "Vein of Love"

It's romantic, but it ain't true mate.

melvinismad (Source)

That a goldfish has a three-second memory.

It's been proven that they have a memory span of at least three months. Or it might be longer. I always forget.

GladstoneBrookes (Source)

That if you put a frog in water and heat it slowly, the frog doesn't notice it and boils to death. In fact, the frog will just jump out.

Ikonal (Source)

Alpha wolves/dogs.

Wolves are not constantly fighting for dominance among each other. Their packs are more like nuclear families with the "alphas" being the two parents and the rest of the wolves being their children. The dominance theory misconception came about when scientists took a bunch of random wolves and threw them together. As expected, the wolves fought with each other and formed a hierarchy to keep things civil. Of course, this is not how wolf packs would be formed in the wild.

AreYouAllFrogs (Source)

That sloths grab their own arms and fall to their death.

EatingCerealAt2AM (Source)

More on the next page!

That glass is liquid.

You don't hear this much anymore, but it was commonly taught to people 20, 30 years ago. The idea came from old window glass, because it was thicker at the bottom - people thought that glass still "flowed" slowly over time. That was just how old glass was blown, and obviously you put the thicker part on the bottom. But I remember meeting physics majors who were convinced of this.

western_red (Source)

Swallowing eight spiders in your sleep every year.

diskempt (Source)

Cutting your hair will have it grow back faster and thicker. Neither is true.

Think about it, why do we see so many balding folks?

asilipie (Source)

Not sure if this counts, because it was never actually a "fact," but nearly every student (I teach elementary) that comes through my classroom believes that our blood is blue. It is almost always the most heated discussion we ever have in science... they're like, but Miss Teacher, look at our veins, they're blue, see? Fact proven, discussion over, just.... ugh.

It makes my (not blue) blood boil.

candypencils (Source)

More on the next page!

According to common myth, camels store lots of water in their hump/s. They don't. They store fat in their humps. 

Twas_All_A_Dream (Source)

That the tongue has specific regions for tasting specific things.

7LeagueBoots (Source)

That daddy longlegs are the most venomous spiders in the world, but their fangs aren't long enough to penetrate our skin. First of all, daddy longlegs don't produce venom. Secondly, daddy longlegs aren't even spiders. By the way, they don't have fangs either.

UnitedStatesOfMatter (Source)

That eating fat makes you fat. False. Excess calories makes you fat.

Swade-Wilson (Source)

More on the next page!

Well, I don't know if it's so common anymore, but the idea that a woman releases Oxytocin which chemically bonds her to the man she has sex with. People used this to argue why people should wait for marriage to have sex, as a woman is "chemically bonded" to her husband permanently

Yes, oxytocin is a bonding hormone, and yes a woman releases oxytocin after she has sex/orgasms, but it does not chemically bond her to her partner permanently. It's more like a few hours or a few days.

spaghatta111 (Source)

That radiation form electrical devices can harm humans (yes radiation can cause a lot of damage but the amount produced by things like smartphones isn't nearly enough)

TheMostUser (Source)

That you can "sweat out" a fever by wrapping a feverish person in blankets. Oh how thrilled I was by that one when I left work because my daughter had the flu, and found the nanny had wrapped her up like a papoose.

Laurenann7094 (Source)

Vaccines cause autism.

They don't, the guy who said they did lost his medical licence because of this.

Cylon_Toast (Source)

More on the next page!

That Mercury is the hottest planet in our solar system because it is closest to the sun. The hottest planet is actually Venus.

therealrccola (Source)

The existence of the "sugar rush." Not only has it been disproved again and again, some college psychology departments require their students to repeat the double-blind studies, so they can see for themselves the wrongness of confirmation bias.

There is not and never has been anything like a sugar rush or a sugar crash. Little kids behave like little kids because they're little kids.

notbannedforsarcasm (Source)

That it is bad or harmful to wake up a sleepwalker.

They're actually more at risk by sleep walking and doing something potentially dangerous.

morblitz (Source)

That ducks quacks don't echo.

bigfatbod (Source)

More on the next page!

MSG is bad for you.

No it is not- it's delicious, naturally occurring and absolutely fine for the vast majority of humans. There might be like 6 people allergic to it, but let's face it; there's more people than that who are actually allergic to sunlight.

You're not making people healthier, Chinese restaurants, you're making food worse.

boondocktaints (Source)

How we only use 10% of our brains and how left brain and right brain are good at different things and whether you are "left-brained" or "right-brained" determines what you are good at.

TheProtagonists (Source)

In Korean culture, there's a widely spread "fact" that leaving a fan on at night while you sleep could kill you by causing hypothermia. After conducting numerous experiments on myself, nothing has happened.

chrishan8 (Source)

People believe that lemmings would in fact walk off of cliffs if they were not directed another way. Lemming will not walk off cliffs, because they contain basic survival functions. To my understanding, this is a misconception caused by a documentary crew. They found that watching lemmings falling off ledges would make for more exciting content, and would push herds off of cliffs.

TheOfficialMJX (Source)

Source

Those of us who live in New York live this truth on a daily basis.

Sometimes, you just meet a person who isn't quite all there. It's hard to tell at first, but then you talk with them for a little while and it just becomes abundantly clear if they're two eggs short of an omelette.

The stories of how you find out are so interesting. But yet, they teach us to look for clues when we interact with others.

Keep reading... Show less