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!

Secret uses

There’s a hidden microphone in your phone, and here’s where it is

You’ve probably twisted a bread bag closed, filled up your car, or pulled a sheet of aluminum foil from the box thousands of times without giving it a second thought. But many of the everyday objects we’ve used for decades have clever features that most people never notice. From the tiny pocket on blue jeans to the little arrow next to your gas gauge, these hidden designs have practical stories behind them, and once you know them, you’ll never look at these familiar items the same way again.

If you own an iPhone, you’ve probably noticed the tiny black dot next to the rear camera. It’s small, so people tend to assume it’s another camera sensor or even part of the phone’s design. The small hole found near the camera bump on every iPhone is actually a rear microphone.

It captures clearer audio when you’re recording videos and helps reduce background noise during FaceTime and regular phone calls. If you own an iPhone Pro model from the iPhone 12 Pro onward, you'll also see a larger dark circle. That’s the LiDAR scanner, which sends out invisible infrared light to create a 3D map of your surroundings. It helps the camera focus faster in low light, powers Apple’s Measure app, and makes augmented reality features much more accurate.

Whether it's a holiday dinner, an anniversary, or simply a nice meal with friends, you’ve probably held a wine bottle and noticed the deep indentation in the bottom. Many people tend to think the deeper the indent, the fancier the bottle.

That indentation is called a punt, and it’s been a part of the bottle-making for centuries. Originally, it helped strengthen hand-blown glass bottles, making them less likely to crack under pressure. Today, it still adds structural stability, particularly for sparkling wines, while also giving servers a comfortable place to rest their thumb when pouring, though some say it helps collect the sediment as wines age. In any case, a deeper pun doesn’t automatically mean a better or more expensive bottle.

Almost every driver has experienced that awkward moment at the gas station. You pull up to the pump, step out of the car, and suddenly realize the fuel door is on the opposite side.

To help prevent exactly that situation, many modern vehicles include a small arrow next to the gas pump symbol on the dashboard’s fuel gauge. The arrow points towards the side of the vehicle where the fuel filler door is located. It’s a small detail on the dashboard, yet once you notice it, you’ll never have to circle the pump again.

All elevators look pretty much the same. Bigger or smaller, they all look similar, a gray box with a mirror and buttons. But if you pay close attention, you may notice there’s a small round opening near the top of the door.

That opening is a keyhole used by trained maintenance technicians and emergency responders. With a special elevator key, they can manually unlock the landing doors when repairs are needed or if passengers become trapped inside. The system allows professionals to reach the elevator safely without damaging the doors or relying solely on electrical controls. Hopefully, most of us will never need to see it in action. But in an emergency, that tiny opening becomes one of the most important parts of the system.

If you’ve ever stood in the bread aisle comparing loaves, you’ve probably noticed the colorful plastic clips or twist ties holding the bags shut. Contrary to what many think, they’re not simply a part of the packaging.

For many bakeries and grocery stores, the colors indicate the day a loaf was delivered or baked. While the exact color schedule can vary between bakeries and regions, employees use the system to quickly spot older inventory and rotate fresher bread to the back of the shelf. That way, customers are more likely to pick up the freshest loaf available.

Whether you wear jeans every day or only pull them out for yard work, you’ve probably noticed the tiny extra pocket tucked inside one of the front pockets. It’s too small for a phone and not very useful for loose change, but there’s a reason for it.

Back in the 1800s, when Levi Strauss & Co. created rugged denim pants for miners, ranchers, and cowboys working across the American West, pocket watches were commonplace. Workers needed a safe place to carry their watches while riding horses, so that little pocket was designed specifically to protect the watch from damage. Pocket watches disappeared, but the tiny pocket became such an iconic part of blue jeans that manufacturers have continued including it for well over a century.

Almost everyone has had the same frustrating experience. You pull on a sheet of aluminum foil, and suddenly the entire roll slides out of the box and lands on the kitchen counter.

That’s exactly why major manufacturers such as Reynolds introduced the small side tabs, known as end locks, in the mid-1990s. By pressing the tabs inward, they hold the cardboard roll in place like built-in axles. This keeps the roll from sliding out of the box, makes it much more stable as you pull, and helps the serrated edge cut a cleaner, straighter sheet. It also reduces waste by preventing the foil from bunching up or tearing unevenly. It’s a simple design, yet useful as it can get.

Every household has pens lying around for all kinds of purposes. And most of them have a common feature, a hole in the cap, which isn’t simply part of the design.

BIC and other pen manufacturers included the opening as a safety feature. If someone, especially a child, accidentally swallows a pen cap, the hole can allow a small amount of air to pass through, reducing the risk of complete airway blockage while emergency help is on the way. The design became part of border efforts to improve consumer product safety after choking incidents drew attention to the danger of small plastic objects.

If you grew up sewing or watching somebody do it, you probably remember the classic tomato-shaped pincushion sitting beside the sewing basket. Hanging from it was a tiny red strawberry that looked like nothing more than a cute finishing touch.

In reality, that little strawberry has its own job. Instead of soft stuffing, it’s filled with emery, a gritty material made from crushed abrasive minerals. Running pins and needles through it helps polish away tiny spots of rust, smooth rough edges, and keep the points sharp enough to glide through fabric more easily.

Think back to the first time you learned to type. Maybe it was at work, or on a family computer. Wherever it was, someone probably told you to keep your fingers on the "home row." That’s exactly why the F and J keys have tiny raised ridges.

The bumps let your index fingers find the correct starting position by touch alone, allowing you to type without constantly looking down at the keyboard. The technique, known as "touch typing," is widely credited to American court stenographer Frank Edward McGurrin, who demonstrated it in 1888. As typewriters became more common, manufacturers experimented with different ways to help typists orient their hands, and by the mid-20th century, companies such as IBM standardized the subtly raised plastic bars that remain on nearly every keyboard today.