Category Archives: Answers

How Pregnancy Tests Work

Karla asks: How do pregnancy tests work? Ah, the pregnancy test. Karla, I can only hope the reason you might be wondering is you’re taking one in a joyous scenario, and you’re trying to have a child, rather than the other way with a little more sweat on your forehead! 😉 Either way, pregnancy tests that use urine samples have […]

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How Erections Work

Amanda asks: How exactly do penises become erect? Well Amanda, the physical response causing a flaccid penis to become hard can be mediated by both physical stimulation (known as somatic) or autonomic (involuntary) processes like arousal from an attractive person, or a combination of both. We’ll first look at the anatomy behind the erection and then talk about how the […]

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Why Testosterone Affects Body Hair Growth

Michael S. asks: Why does testosterone cause more body hair? Testosterone is a steroid hormone from a group called androgen. Androgen affects many characteristics in our bodies, like the development of the male sex organs, the deepening of the voice during puberty, muscle and bone strength, and hair growth. Interestingly, the same circulating androgen, like testosterone, can increase hair growth […]

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What Causes Dandruff

Byron H. asks: What causes dandruff? Ah, dandruff! That white flaky stuff we see on the shoulders of homeless people everywhere. We’ve all seen that guy in front of us at the supermarket who looks like he just came out of a snow storm. Ever wonder what causes this embarrassing blemish on our hygiene? Dandruff is simply dead skin cells […]

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What is Lupus?

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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Chicken Pox Is A Form Of Herpes


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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Does Sex Before An Athletic Event Really Hinder Performance?

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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