Hitting Testicles (with Ultrasound Pulses) May Be an Effective Contraceptive

On the left is a normal testicle. On the right is one that has been blasted with ultrasound. The latter has a reduced sperm count, which is why researchers at the University of North Carolina think that they may have discovered an effective male contraceptive:

They found that two, 15-minute doses "significantly reduced" the number of sperm-producing cells and sperm levels. [...]

Lead researcher Dr James Tsuruta said: "Further studies are required to determine how long the contraceptive effect lasts and if it is safe to use multiple times."

The team needs to ensure that the ultrasound produces a reversible effect, contraception not sterilisation, as well as investigate whether there would be cumulative damage from repeated doses.

Link -via Popular Science | Photo: James Tsuruta and Paul Dayton

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When I was younger I put my finger into water in front of an ultrasonic fog generator. It stung like hell.

They want me to dangle my tonkers in an ultrasonic cleansing tub or ultrasonic welders for _fifteen minutes_? Diff'rent strokes for different folks and all that but I'm just not into masochism.
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