When it comes to sexual attraction, it turns out that men might better be concerned with the length of their fourth (or ring) fingers than the length of anything else. Researchers have discovered that women tend to be more attracted to men whose ring fingers are longer than their index fingers.

We’ve known for a while that the length ratio between the second and fourth fingers of a man may indicate how much testosterone he was exposed to in the womb, with longer ring fingers indicating more testosterone exposure. And many researchers have taken this finding to new levels, including a study from last December that revealed that the risk of prostate cancer drops by a third in men with longer index fingers.

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American men are getting heftier, but worries that their waistlines and sperm counts are inversely related might be a little overrated.

Nanette Santoro from the Albert Einstein College of Medicine in the Bronx just finished a study finding that men with very high body mass indexes did not show decreased sperm counts or lowered sperm quality, contrary to conventional wisdom. She and her colleagues studied nearly 300 overweight men between the ages of 18 and 50, and found that while many showed lower testosterone levels, the subjects’ sperm production was no different than ordinary men.

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