Magnetic Birth Control, Delivered By Shots

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The following is an article published at  forbes.com 

Scientists Invent Magnetic Birth Control, Delivered By Shots (forbes.com)

Scientists have developed tiny magnetic particles that could one day be used by men for birth control.

The nanoscopic particles are injected into the bloodstream and would then be guided to the testes with a magnetic field, which also generates heat for contraception.

Heat is a natural contraceptive. Male mammals often have a suspended scrotal sac to keep their testes cool. By wearing tight pants or underwear, some male humans also raise the temperature of their scrotums, which can lower sperm counts.

Led by Fei Sun and Weihua Ding from the Institute of Reproductive Medicine at Nantong University in China, a team of researchers has been studying artificial ways to heat the testes — using nanoscopic particles as contraceptives.

In a , the team tested gold nanorods that control contraception by using beams of light to heat the metal pills and create a ‘photothermal effect’.

But as they note in their new study, gold nanorods have “associated limitations, such as testicular administration and infrared laser inflicting severe pain.”

Besides the fact that jabbing your balls and heating them with lasers may not be ideal before lovemaking, the gold nanorods were just 90% effective at reducing fertility, as well as being non-biodegradable and potentially toxic.

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