gettyScientists 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. The team's latest research, published in the journal Nano Letters, involved injecting male mice with magnetic particles made of iron oxide (magnetite). When the researchers applied an alternating magnetic field, the nanoparticles would warm-up the testes. One was coated with polyethylene glycol (PEG), which was hard to manipulate with a magnetic field but easy to heat.

Source: Forbes July 30, 2021 03:00 UTC