Regular readers may remember a couple of years ago I wrote about Serge Voronoff, the Russian-born emigre who transplanted monkey gonads into human recipients.
In 1920 Professor Frank Lydston was impressed enough to have scrotal surgery himself. He had a third testicle implanted between the two he already had. Not only did his extra ball supposedly grant him an increase in sexual power and vigourous prolonged erections, it also lowered blood pressure, staved off senility and halted arteriosclerosis in its tracks.
He also claimed, after performing the procedure on a 22 year old man, that it cured him of “writing incoherent rambling dissertations on architecture.”
Lydston only used human testicles in his transplants while Voronoff used mainly chimpanzees and the occasional baboon. Baboons have much larger balls than chimps, so Voronoff divided these in two, giving his patients half each.
Another scientist who dallied with rejuvenating operations via the testicles was Steinach. Judge for yourself the successful change in his patient below
image found here