Men needed for contraceptive test

There are more female than male methods of contraception available

Researchers at the University of Manchester are looking for couples to test the new male contraceptive.

Men in stable relationships were being asked to come forward and inject the hormonal birth control, using it instead of their female partner.

The men from the couples - 60 in Manchester and a further 340 internationally - will be tested.

The study is partly funded by the World Health Organisation, concerned about the lack of male contraception.

Barrier method

It will initially involve up to four courses of injections over six months, during which time the men's sperm count will be measured to ensure it is below fertility levels.

Scientists believe that the injection gives a similar level of protection as that of the female pill, and also poses less risk than the barrier method alone.

The couples will then be asked to rely solely on the hormonal method for 12 months while the male partner continues to receive the injections every eight weeks.

Lead researcher Frederick Wu said: "There is a great imbalance of contraceptive methods between men and women with almost 20 different female methods compared to only condoms and vasectomy for men.

"The World Health Organisation wants to provide more male contraceptive choices - especially reversible methods - to allow couples to better plan their families.

"We know from previous studies that any side-effects are minor."