While an overactive thyroid is more common in women, male hyperthyroidism does occur and usually requires medications to keep it in check. Graves’ disease is the most common cause of ...

Look at one and then the other. Can you tell which brain is female and which is male? You can't. Humanity has been hunting for sex-based differences in the brain since at least the time of the ...

This article will review male- and female-pattern baldness signs, what causes it, and potential treatment options. It's important to note that while the terms "male-pattern baldness" and ...

There is only a weak link between brain structure and behavioral variations, with this weak relationship largely explained by brain size, because male brains on average are 10 to 15 percent larger ...

However, the sex tech revolution that began in the 1960s has led to a boom in automated sex toys and, specifically, male masturbators. These penetrative playthings, often designed to mimic the ...

We’re not here to compare species, though. Instead, we’re trying to answer a more common question: How can you tell the difference between a male and a female guinea fowl? Well, we’ve identified four ...