Finger ratio points to penile length

The ratio between the second and fourth digits is linked to stretched penile length according to a study published online this week in Asian Journal of Andrology. This finding suggests that digit ratio can predict adult penile size and that the effects of prenatal testosterone may in part explain the differences in adult penile length.

Digit ratio has been correlated with a number of aspects of and over the past decade, including a link with the risk of developing prostate cancer. Digit ratio has also been proposed as a putative for prenatal testosterone and covaries with the sensitivity of the .

Both prenatal testosterone and the androgen receptor play a central role in penile growth. Tae Kim and colleagues provide support for a relationship between digit ratio and penile length. Men with a lower digit ratio tend to have a longer penile length. The authors concluded that higher prenatal androgen exposure is responsible for both the lower digit ratio and the longer penile length.

As Denise Brooks McQuade highlights in her accompanying Commentary, this finding indicates the potential value of the digit ratio biomarker for predicting clinical conditions that are related to developmental androgenic effects.

More information: Finger ratio points to penile length - DOI:10.1038/aja.2011.75

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Jul 05, 2011
Mmmmmhhhh, what's the chance that most men would prefer a lower digit ratio in order to possess a longer penis, regardless of the negative consequences?
Of course they can minimise the cancer by eating lots of boiled tomato, celery and brocolli.
Jul 05, 2011
The link above goes to the entire paper not just an abstract.
The interesting thing is how they measured the male organ: "Flaccid and fully stretched penile lengths were measured under anaesthesia."
Jul 05, 2011
I am having trouble typing this as my fingers are so long ;)
Jul 07, 2011
This should mean that the youngest brother in the family should have the biggest penis. Every older brother you have increases the amount of Test you were exposed to in utero. Having older brothers also greatly increases your chances of being homosexual.
Jul 10, 2011

"Lets take a look at the hands of one of the biggest stars in the adult industry today: Ron Jeremy. Jeremy is today known as the best performing male adult star ever, he is e.g. listed in the Guinness Book of World Records for Most Appearances in Adult Films, and he is noted for his 9.75-inch (~24.75 cm) penis (self-reported according Wikipedia).

How about his hands? His handprints are display at the entrence of Hustlers Hollywood, at the Porn Stars Walk of Fame in West Hollywood, California see the picture below. His 2D:4D digit ratio is estimated at 0.85 which is exceptionally low for a caucasian male!"

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