![]() (I don't believe it for a second, but if it makes you feel better, go ahead.) And a 2016 report found that both men and women with a low 2D:4D ratio (longer ring fingers) had better athletic abilities. That study found that men whose index fingers were longer than their ring fingers had a reduced risk of cancer. “The length of a man's fingers can provide clues to his risk of prostate cancer, according to new research.”īased on this study in the British Journal of Cancer. There are many, many more claims out there. Whoa! They are not only claiming that the 2D:4D ratio is predictive of homosexuality, but also that exposure to prenatal androgen is the root cause of both finger lengths and sexual orientation.** (Confusing correlation with causation, perhaps?) Not surprisingly, this claim is not widely accepted. " evidence that homosexual women are exposed to more prenatal androgen than heterosexual women are also, men with more than one older brother, who are more likely than first-born males to be homosexual in adulthood, are exposed to more prenatal androgen than eldest sons." Based on this data, they concluded that finger-length ratios show Nearly 20 years ago, Berkeley psychologist Marc Breedlove (now at Michigan State) published a study in Nature where he and his colleagues measured finger-length ratios in 720 adults in San Francisco. Nonetheless, some researchers have taken this tiny physiological difference and run with it. Not only is this a tiny difference, but in every study, the 2D:4D ratio among men and women overlapped, meaning the number alone doesn't tell you very much. Another study found average values of 0.984 and 0.994 for men and women. One recent study reported that this ratio was 0.947 in men and 0.965 in women. If the ringer finger is longer, than the 2D:4D ratio is less than one. It turns out that most people have slightly longer ring fingers than index fingers, and in men the difference is a bit larger.
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