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Finger and testosterone

http://news.bbc.co.uk/1/hi/health/4314209.stm
It has been known for some time that there is a direct correlation between finger lengths and the amount of the male sex hormone testosterone that a baby is exposed to in the womb.
In women, the two fingers are usually almost equal in length, as measured from the crease nearest the palm to the fingertip. In men, the ring finger tends to be much longer than the index.

http://news.bbc.co.uk/2/hi/health/4921690.stm

If the ring finger is longer, it indicates a high testosterone level.

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