By The Way, Hands Don’t Reveal Much About Penis Size

At last night’s Republican debate, a new issue surfaced when candidate Donald J. Trump responded to Sen. Marco Rubio’s previous remark about the size of certain body parts.

“And he [Rubio] referred to my hands: ‘If they’re small, something else must be small.’ I guarantee you there’s no problem. I guarantee,” Trump said.

Although news organizations have understandably decided to pass on fact-checking this claim, it does raise a scientific question: Is the size of a man’s hands related to the size of his manhood?

There have been conflicting results about this question, said Debby Herbenick, a sex researcher at Indiana University.

Some studies have found a correlation between finger length and penis size, and others have not, Herbenick told Live Science. But these studies look at groups of people, not individuals, she said. Certainly, you’ll find people with big hands and small penises, small hands and big penises, and every other combination in the real world, she said.

A 2011 study, for example, suggests that there may, in fact, be a link between hand size and penis size. The study, published in the Asian Journal of Andrology, found that the ratio between a man’s index finger and ring finger was linked to penis size. Specifically, the researchers found that having mismatched index and ring fingers (meaning these two fingers are different lengths) was linked to having a longer penis.

The association is not as out-of-left-field as it may seem. Some research suggests that testosterone exposure in the womb may play a role in both penis size and finger length, although more studies are needed to confirm this idea, the researchers said.

How big are we talking?

In a 2013 study, researchers found that the average American man’s penis is 5.6 inches (14.2 centimeters) long when erect. But there’s a great —> Read More

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