You’ve been lied to!

Medical misconceptions you surely have and don't know!

Image: National Cancer Institute

You’ve surely heard that staying out in the cold will give you a cold, right? But is that true? And what about cracking your knuckles? Is that habit really so harmful? Science may have medicine’s back, but it’s not free from myths and misconceptions. Regardless of where they come from, we all believe some things to be true… but aren’t!

Today, we’re putting six common medical myths to the test. Place your bets before you get to the next section; some might surprise you, others might make you laugh, but all will set the record straight once and for all!

Image: Howard Bouchevereau

Many people worry that using a microwave to heat or cook food zaps away the nutrients, making meals less healthy.

Why? Since microwaves use electromagnetic waves, some believe they might be harmful, similar to radiation exposure. Others think traditional cooking methods like boiling or steaming are better at preserving nutrients.

So, what do you think? Is your microwave secretly robbing your food of its goodness?

Image: Vlad Zaytsev

Good news: your microwave is not ruining your food! In fact, microwaving can help preserve nutrients better than many other cooking methods.

Nutrient loss mainly depends on temperature, cooking time, and how much water is used. Since microwaves cook food quickly and with minimal water, they actually retain more vitamins than boiling or frying.

And as for radiation? Microwaves use safe, non-ionizing radiation, nothing like nuclear energy. You’re safe to go!

Image: Clay Banks

Your parents or grandparents may have warned you never to go to bed with wet hair or you’d wake up with the sniffles. (Why does everything end the same way?) The idea seems reasonable, being cold and damp does feel like a recipe for illness, right? But can a little leftover shower moisture really put you out of commission? What’s your answer?

Image: engin akyurt

This is also a myth! While sleeping with wet hair might be uncomfortable, it won’t actually give you a cold. Colds are caused by viruses, which you can only catch from other people, not from chilly air or damp pillows.

However, wet hair can make your pillow damp, which could create a breeding ground for bacteria and fungus. Needless to say, you might wake up needing more than just a gentle brush. But as for catching a cold? No virus, no problem!

Image: Jacopo Maiarelli

Some people believe that fruit and veggie skins are dirty, hard to digest, or even unhealthy. Are you one of them?

Others think peeling removes pesticides and makes produce safer to eat, and that kind of makes sense. So much so that grocery store produce sections are full of pre-peeled options, reinforcing the idea that skinless is better. But what if you’re actually throwing away some of the best parts?

Image: Sharon Pittaway

Peeling produce removes fiber, vitamins, and antioxidants, which are often most concentrated in the skin. For example, an unpeeled apple contains up to 300% more vitamin K and 140% more vitamin A than a peeled one.

Potato skins are loaded with vitamin C, and citrus peels contain powerful antioxidants. Instead of peeling, make sure you wash your produce thoroughly to remove dirt and pesticides. Your bod—and your taste buds—will thank you!

Image: engin akyurt

For years, people have warned against cracking their knuckles, claiming it could lead to painful arthritis later in life.

The noise it makes reinforces the idea that something is breaking in there, don’t you think? Many parents, and countless teachers, scold knuckle-crackers, fearing they’ll regret it when they’re older. But does this everyday habit really put you on the fast track to arthritis? Place your bets before you keep reading!

Image: Scheich Méshaël Zāhedd

Despite the dramatic popping sound, cracking your knuckles doesn’t cause arthritis. So where does that sound come from? It’s actually gas bubbles in the joint fluid bursting, not bones rubbing together.

Multiple studies have found no link between knuckle cracking and joint problems. However, if you experience pain or swelling, that could signal an underlying issue, and you should see a doctor. And of course… stop that pop!

Image: Monique Carrati

If you ever had breakouts as a teenager, chances are someone told you to lay off the chocolate, right? That’s because many people believe that chocolate, especially the sugary or oily kind, triggers pimples and skin problems.

With so many acne products marketed toward diet-conscious consumers, it’s easy to assume that sweets are to blame. But how bad is chocolate, really?

Image: Towfiqu barbhuiya

There’s no solid scientific proof that eating chocolate directly causes acne. Acne is mainly caused by hormones, genetics, and skin bacteria, not specific foods.

That said, diets high in sugar and processed foods can contribute to inflammation, which may worsen breakouts. So if you think chocolate affects your skin, try switching to dark chocolate, which contains less sugar and more antioxidants.

Image: Erik Karits

Have you ever been told to eat some garlic to naturally repel all those mosquitoes eating you alive? Where does this belief come from?

The idea likely stems from the fact that garlic’s sulfur compounds can seep through your pores, supposedly making you less appealing to bugs. It’s a popular home remedy, but does it really work?

Image: Sanjay Dosajh

Unfortunately, there’s no scientific proof that eating garlic repels mosquitoes. We’re heartbroken too, don’t worry!

A 2005 study found no difference in mosquito bites between people who ate garlic and those who didn’t. Instead, mosquitoes are attracted to carbon dioxide, sweat, body heat, and certain scents. If you want to keep them away, use repellent, wear long sleeves, and eliminate standing water. Garlic plays no part here!

Tango, Bravo

Codewords decoded: How many did you know?

In situations where clear communication is paramount, especially when lives are at stake, professionals often rely on standardized codewords and phonetic alphabets designed to prevent confusion. Either from movies or from personal experience, it's probable that you've heard at least some of these before, and many have found their way into everyday conversation. Let's find out how many of these code expressions you can recognize.

Mayday is the international distress call used when the sender is in immediate, life-threatening danger. Pilots and mariners use it to signal that they require urgent assistance due to situations such as engine failure, fire, flooding, or medical emergencies.

The word was introduced in 1923 by British radio officer Frederick Stanley Mockford, who based it on the French phrase m'aider, meaning "help me," in an attempt to make it internationally recognizable. Hearing this transmission immediately alerts emergency responders that every second counts.

Not every emergency is severe enough to warrant a mayday call. When a crew faces a problem that is urgent but not immediately life-threatening, the appropriate codeword is Pan-Pan.

Like mayday, it comes from French: it derives from panne, meaning a breakdown or mechanical failure. A Pan-Pan call might be used if an aircraft loses an engine but can still fly safely, or if a ship experiences equipment problems while remaining under control. It tells responders that assistance is needed, but that the situation has not yet become critical.

Few emergency signals are as universally recognizable as SOS. Contrary to popular belief, the letters do not officially stand for "Save Our Ship" or "Save Our Souls." It was adopted in 1906 because SOS is an extremely simple, easy-to-transmit, and unmistakable pattern in Morse code.

SOS remains one of the world's most enduring distress signals, and it's still recognized by rescue organizations all around the globe.

In the NATO phonetic alphabet, each letter is assigned a unique word to eliminate confusion when radio transmissions are distorted by noise or poor reception. If you've ever heard someone spell a name as "Mike Alpha Romeo Yankee," you've encountered the NATO phonetic alphabet.

The system was officially adopted by NATO in the 1950s and is now widely used by militaries, airlines, emergency responders, and many police departments worldwide. Using it greatly reduces the chance of misunderstanding important information over radio.

Roger dates back to the early days of radio communication, when the letter R stood for "received." Before the adoption of the NATO alphabet, the US military used Roger instead of Romeo to represent that letter_._

Although modern communications systems have changed and the US military has fully embraced the use of the NATO alphabet, Roger remains standard aviation terminology, and it's one of the best-known radio acknowledgments in the world. It conveys a very simple but important meaning: "I have received and understood your message."

Although many people assume Roger and Wilco mean the same thing, they actually convey different messages. Wilco is short for "will comply." In other words, it tells the sender not only that the message was received and understood, but that the instruction will be carried out.

Saying both Roger and Wilco is technically redundant in proper radio communication, since complying necessarily implies understanding, but the combination is often heard in movies and television.

In the NATO phonetic alphabet, Tango simply represents the letter T. However, US military personnel have also adopted it as a shorthand when referring to a target or a hostile.

This secondary meaning became widely known through military operations in the twentieth century and has since appeared in countless books, films, and video games in phrases like "We've got one Tango moving north."

Oscar Mike, NATO for the letters O and M, is military shorthand for "On the Move." It's a quick way of reporting that a unit has begun moving toward its objective.

The expression is especially common in the US military and has become more familiar to the general public through documentaries, memoirs, and films. It's finding its way into civilian life, meaning simply "I'm heading out."

Ten-codes were developed during the 1930s to allow for brevity and standardization of message traffic in radio communications. They were widely adopted by US public safety departments and by radio enthusiasts.

While the system is being slowly phased out in favor of plain language communications, many local police, fire, and sheriff departments keep using it, and it is still strongly associated with radio culture by the general public. One of the most famous ten-codes is 10-4, meaning "received and understood."

Hospitals around the world use color-coded announcements to communicate emergencies without causing unnecessary panic among patients and visitors. Perhaps the best known is Code Blue, indicating that a patient is experiencing cardiac or respiratory arrest and requires immediate medical assistance.

While some hospitals use their own custom color codes, Code Blue has become so widely recognized that it now appears frequently in television dramas and everyday conversation whenever someone refers to a life-threatening medical emergency.