For starters, we don’t mean to alarm you, but it turns out, despite how much we all fight it like a toddler who’s just been told it’s bedtime, sleeping is a basic, and critical human need. All animals known to man sleep. Humans, however, are seemingly the only ones who voluntarily forgo it, outside of cases like if an animal […]
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Jean D. asks: Why do we need oxygen to live? Take a deep breath. Now repeat. Do this about 16 times per minute and you usually get all the oxygen your body needs. Every wonder why you need oxygen to survive in the first place? All life as we know it occurs because of how atoms and molecules interact with […]
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If you were born in the United States in 1900 you had about a 1 in 3 chance of dying from an infectious disease. If you were one of the unlucky third, 40% of you would die before the age of 5. In fact, the top three causes of death were infectious disease at this time- namely, pneumonia and flu, […]
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Katie O/ asks: How much caffeine would someone have to drink to be fatal? There have been numerous deaths attributed to excessive caffeine ingestion. So if you happen to be a person who loves coffee and energy drinks, you might want to know approximately what amount you should avoid drinking on a given day. So how much caffeine would it […]
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There are several different types of blood. Contained within them are different types of cells and countless molecules that give our bodies the needed nutrients to work effectively. The two main types of cells within the blood are red and white blood cells. Red blood cells make up nearly 45% of your blood volume. White blood cells make up less […]
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Brexstacular asks: Why don’t drunk drivers get injured very often in wrecks? There are seemingly never ending news stories involving the mug shot of a drunk driver mostly unharmed after getting in an accident. Meanwhile, their victims are left fighting for their lives, or worse, already dead. The perception from this is that somehow being drunk will protect you from […]
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L.I.A.L asks: Why do we have moles all over our body and what do they do? Moles, in general, are simply an abnormal grouping of cells called melanocytes. Melanocytes are the cells responsible for giving your skin its pigment. They reside in the basal layer of your skin, and overall, have a surprisingly uniform distribution. Their density will vary depending […]
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Mandy R. asks: In movies they always act like it’s important for a person to stay conscious when they’ve been seriously injured. Does that really help someone live? Special thanks to Scott from the Medical Confessions podcast for answering this one for us! We’ve all seen movie scenes where someone is seriously injured and slowly drifting in and out of […]
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Clark H. asks: I see you’re taking on many controversies like salt and aspartame. Any chance of you looking at the health risks fluoridation of water? Fluoridation is the act of adjusting fluoride levels in water, with the goal of reducing tooth decay. In 1945, Grand Rapids, Michigan was the first city in the world to do it. In 1999, […]
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Valerie C asks: Can staying awake too long really kill you? Every college student knows the eye-stinging pain of a caffeine-induced all-nighter. It’s been well documented that prolonged sleep deprivation will lead to lower cognitive and motor function, as well as impaired memory; it might even give you the tired-giggles. No one has ever definitively shown why sleep is necessary […]
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Simon A. asks: Why do people need to warm up before exercise? Many animals don’t seem to have such an issue, like a cat going from completely still to sprinting after prey. So what exactly is going on internally that makes doing some activity with a warm up first less injury prone than if one just jumps into it? Or […]
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YouTube subscriber Chase P. asks: Do a video on why humans have allergies. It’s that time of year when tissue companies nationwide rejoice at the excessive mucus caused by allergies. If you’re one of the unlucky, you might ask yourself why we get them anyway? Why would our immune systems react to seemingly harmless things like pollens, dust mites, and […]
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Kelley M. asks: Is a guy’s hand or foot size actually a good indicator of the length of their penis or is that a myth? Given that public nudity is generally considered unacceptable in most of the modern world (and if you’re wondering, see: When Did Humans Start Wearing Clothes?), people have long tried to come up with other potential […]
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Julia C. asks: Why do you get a lump in your throat when you are sad? If, like me, you’ve been subjected to watching The Notebook with your spouse, you might have experienced an uncomfortable lump in your throat. As you attempt to breath heavy and avoid crying like a little kid who has just skinned her knee, you might […]
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Shannon D. asks: How come people who smell really bad can never seem to smell their own stench? Have you ever sat next to a woman on a bus who lost her sense of smell? Or, at least, you assume so as the eye-watering fragrance wafting from her perfume is so overpowering that the nausea it induces makes you appreciate […]
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Neal H. asks: Why do we put hydrogen peroxide on our cuts? As a child, did you ever skin your knee and fear telling your parents, afraid of your mom breaking out the brown bottle of pain containing hydrogen peroxide to “help heal” your wound? Given the agony it caused, you might have wondered whether the fizzing liquid was actually […]
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Andrew C. asks: Is it possible to get the flu from getting a flu shot? Vaccines, in general, have been a massive boon to humanity. They’ve rid the world of an affliction that has plagued humanity for thousands of years in smallpox (for reference killing over 300 million people in the 20th century alone before it was eradicated), and have […]
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Mark C. asks: Why does drinking coffee almost always make me have to poop? As any barista beginning their 5am shift will tell you, a morning cup of coffee is essential for a chipper attitude and a healthy psyche! The dilemma some have is that right after you indulge- it hits you. The #2 train is about to arrive and […]
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