Second to fourth digit ratio (2D:4D) and testosterone in men.

  title={Second to fourth digit ratio (2D:4D) and testosterone in men.},
  author={John T. Manning and Susan L Wood and Ellen Vang and Julie H Walton and Peter E Bundred and Charles van Heyningen and David Iwan Lewis-Jones},
  journal={Asian journal of andrology},
  volume={6 3},
AIM To investigate the relationship between 2D:4D and testosterone in men attending an infertility clinic and men drawn from the general population. METHODS Data on 2D:4D and testosterone from two samples were collected: (1) 43 men attending an infertility clinic, and (2) 51 men drawn from the general population without regard to fertility. RESULTS In sample (1) there were negative associations between 2D:4D and testicular function, and men with lower 2D:4D in their right compared to left… CONTINUE READING

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