New study below [1].
The study of finger length ratios may seem as wacky as palmistry & phrenology, and certainly not something that should have survived into the 21st century, but ....
The ratio between the lengths of the index finger (2D) & ring finger (4D) is affected by the ratio of testosterone to estradiol in the womb. ("The 2D/4D ratio at the age of 2 was found to be negatively correlated with the testosterone/oestrogen ratio as measured by amniocentesis in the second trimester" [3])
Surprisingly, the 2D:4D ratio correlates with being good/lousy at sports & much else. A low ratio increases PCa risk, whereas a high ratio means more heart disease.
Chances are, members of this group have a longer ring finger [2]:
"Pattern of finger lengths may be a simple marker of prostate cancer risk, with length of 2D greater than 4D suggestive of lower risk."
[3] "The 2D/4D ratio is related to adult testosterone levels and the presence of testosterone deficiency syndrome. Patients with high 2D/4D ratios have lower testosterone levels and higher risk of testosterone deficiency syndrome."
[4] "The PCA group presented significantly lower right and left 2D:4D ... in comparison to healthy controls"
In the new Chinese study [1]:
"Digit ratio may not only have predictive value in risk but also prognosis of prostatic cancer. This finding suggests that low 2D:4D can be used as prognostic factors to identify patients with a poor prognosis. These patients may benefit from more aggressive management."
...
I wonder how one obtains funding for such studies?
Perhaps our own data could advance the science of PCa anthropometry? LOL
-Patrick
[1] ncbi.nlm.nih.gov/pubmed/287...
[2] ncbi.nlm.nih.gov/pubmed/211...