Scientists at Cornell University may be closing in on the long-sought “holy grail” of male contraception: a safe, reversible, nonhormonal method that completely halts sperm production. In a breakthrough mouse study, researchers used a compound called JQ1 to temporarily shut down meiosis—the critical process that produces sperm—without causing lasting harm. After treatment stopped, sperm production bounced back, fertility returned, and the animals produced healthy offspring.
In mice . . . is not suitable as a treatment due to neurological side effects
Hence why they’re “closing in”, and not claiming success. Good article, good science. We don’t have to focus on the negatives 100% of the time my friend