Male contraceptive could be "holy grail"

BRITISH men have become the first in the world to enter early trials of a “holy grail” contraceptive pill for blokes. The pill, named YCT-529, works by blocking the vitamin A supply to the testicles to halt sperm production. There are currently no male contraceptive drugs so inventors hope this will one day be a popular alternative to the female pill and condoms. It is the first candidate not to contain hormones and was found to be 99 per cent effective and 100 per cent reversible in experiments on mice and monkeys. Experts are now testing its safety in humans for the first time, on a group of 16 men enrolled at a clinic in Nottingham.