What Can Men’s Fingers Reveal About Fidelity?

By Brad Palubicki,

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 Surprising as it may seem, the length of a man’s fingers, or to be more precise, the length ratio between the index and the ring fingers (also called 2D:4D ratio), can reveal tendencies about his promiscuity.

A recent study published in Biology Letters found that men whose ring fingers are longer than their index fingers are more likely to engage in promiscuous behavior with the opposite sex. Researches came to this conclusion after interviewing 575 British and North American men and learning about their attitudes toward sex and fidelity, and then comparing their findings against 1,314 measurements of index and ring finger ratios of other British men and women.

What they found was a strong correlation between male relationship preferences and their 2D:4D ratios. The longer the ring finger is compared to the index finger, the more likely a man is to have lax attitudes toward commitment and fidelity. According to the study’s hypothesis, this fascinating correlation can be explained by people’s prenatal exposure to testosterone while in the womb, which has a strong effect on their future ideas about promiscuity.

However, the authors of the study make one important reservation, saying that, although their findings “can help identify the group of people who are more likely to be promiscuous,” they are “not predictive of individual behavior” – a good thing to know if you date a guy with a long ring finger.

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Brad Palubicki is a passionate supporter of healthy lifestyles and an outspoken advocate of men’s and women’s right to be healthy. As President of NuMale Medical Center, an industry leading national network of men’s health clinics, Brad Palubicki understands what it takes to maintain the highest levels of patient care. Under his leadership, NuMale has become one of the most trusted names in men’s sexual health and has expanded its footprint nationwide.