Glenn Ketchen's testosterone implant, December 2000.
3 4 c m
actual image size: 32cm x 26cm

Glenn Ketchen's testosterone implant, December 2000.

Hills, Jennie

© Science Museum / Science & Society Picture Library


Glenn Ketchen took part in a trial of the male pill and testosterone replacement implants at Edinburgh University during 1998 and 1999. A pill was taken daily and stopped the production of sperm and testosterone, so a testosterone implant was used to replace it. Ketchen's was the first succesful trial of a male pill in which all participants' sperm counts were reduced below fertility levels without any significant short-term side effects.



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