Tristan asks: Does Mountain Dew kill sperm? Tristan- If you’re thinking that a 3 pack of condoms costs around $5 and Mountain Dew is only $1.99 for the 2-liter, so why not save yourself $3 on your contraception, think again! Pay the extra money! Mountain Dew does not kill your sperm, lower sperm count, make your penis smaller, or shrivel […]
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James asks: I always see the meme “it’s never lupus”, but what exactly is lupus? Lupus, Latin for “wolf”, is a chronic (long term) autoimmune disease. Meaning the body’s immune system mistakenly attacks healthy tissue instead of harmful bacteria, viruses, or other harmful organisms. Tracing back to the 14th century, lupus and cancer were both common names for an ulcerous […]
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Gina asks: What exactly is the doctor looking for when she takes a pap smear? If you’re a woman, the term “Pap smear” probably makes the hairs on the back of your neck stand up. The very thought of putting the appointment on your calendar makes little beads of sweat begin to form on your forehead. Similar to getting a […]
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Anyone who has watched a President through their term in office knows stress might be a cause for gray hair; the stress/graying hair effect is particularly notable in President Obama. If you have teenagers, you’ve probably even remarked to them the stress they cause you is making your hair turn gray. The truth is going gray really has to do […]
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One of the first challenges that firefighters face when they arrive at a fire is finding a suitable water source that provides enough water for the type of fire they are fighting. Common sense tells us a car on fire will require much less water than a burning apartment building. There are formulas used by firefighters that will tell them […]
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From Andrew- Is Aloe Vera really good for your skin? Well Andrew, that’s a very good question, but the answer depends on who you ask. There are any number of naturopathic healers who swear by its use to treat any number of conditions ranging from sunburns, psoriasis, osteoarthritis, high cholesterol, to a cure for stretch marks. It can be found […]
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Jeane asks: A friend told me Chickenpox is a form of Herpes. Is this true? Yes Jeane, Chickenpox is one form of a Herpes Virus. Most of us are familiar with the 2 sexually transmitted types of Herpes: Type 1 (oral herpes) and type 2 (genital herpes). But actually, there are over 25 known viruses that fall into the Herpes’ […]
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Ken J. asks: How is the calorie content in food determined? First, let’s make sure everybody here understands what a calorie is. A calorie is just a measurement of energy- the amount of energy needed to raise 1 gram of water 1 degree Celsius at standard atmospheric pressure. This makes sense when talking about calories in food. Food provides energy […]
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Tristan asks: Why are some people right handed and some left handed? Tristan it appears that there is no single mechanism that will definitively determine which hand you will prefer. Technology and further studies will continue to help shed light on the subject. What is known is that it essentially comes down to genes and biological asymmetry in the human […]
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Maya asks: Why does Chemotherapy cause hair loss? Maya I love the question. It seems like once or twice a year I’m shaving my head to help raise money for cancer research and at every fundraiser, the question seems to come up- Why does the common treatment for cancer make body hair fall out? The answer is really pretty simple. […]
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Frank asks: Does having sex before an athletic event really hurt performance in the event? Good question! There are two schools of thought on this particular issue, but the short answer is that it could psychologically (although no study has definitively proven it), and “no” physically (unless you need a reduction in testosterone to help with excessive anxiety and lack […]
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Jennifer asks: Why do people seem to get more colds in the winter? Well Jennifer, this does seem to be the societal perception, no doubt promoted by every overprotective mom telling their kids to put a coat on when going outside, because they might catch a cold. There are two aspects to this question. The first is temperature. Numerous studies […]
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Carmen asks: What do the numbers in a blood pressure test mean? Also, what types of things do these numbers tell doctors? Well Carmen, blood pressure is really just that- the pressure at which blood moves around the body in your arteries. The easiest and least invasive way to test what that pressure is at any given moment is to […]
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Today I found out that all humans can be traced back to a single female known as Mitochondrial Eve. This woman is thought to be the “mother” of all humans alive today. Seems like a big claim for scientists to make. So how do they know this? The simple explanation is that when an egg is fertilized by a sperm, the […]
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Today I found out what causes lactose intolerance. Lactose intolerance is simply the body’s inability to digest lactose. Lactose is a disaccharide, or a molecule made up of two types of sugars, in this case, glucose and galactose. Most people have an enzyme (a protein molecule that breaks down other molecules) lactase in their digestive systems. This enzyme breaks down […]
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Today I found out crocodiles really do shed tears when they eat. It has been known for centuries that crocodiles weep while eating. One of the earliest references to this comes from the 14th century bestseller The Voyage and Travel of Sir John Madeville, where the author writes In that country and by all Inde be great plenty of cockodrills, […]
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Today I found out why black lights make things glow. Black lights are not that different from any other type of light, whether incandescent, fluorescent, or just the age old candle flame. The difference is that black lights emit most of their light waves just outside the range humans can perceive, in the Ultraviolet (UV) part of the spectrum. When […]
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Myth: Proper CPR technique should include frequent use of “mouth to mouth” in between compressions. In fact, the 2010 guidelines set out by the American Heart Association (AHA) do not recommend breathing for someone while performing CPR (and not for your health, as you might think, but for the person experiencing cardiac arrest’s chances of survival). If you’re a person […]
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