1. Longer index finger is linked to irritability from What Genetic Traits Reveal About Your Health

What Genetic Traits Reveal About Your Health

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1. Longer index finger is linked to irritability

If you’re easily annoyed and lose your temper often, the answer may be in your fingers. Aggression may have biological causes rooted in the length of a person’s ring finger to the index finger, according to a 2012 study. Basically, if the latter is longer, you can be predisposed to flare-ups. All of this may be due to higher prenatal testosterone exposure. However, long index fingers are also linked to lower prostate cancer risk.

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