When I reported last year about the urgent need for blood donors I received many comments from gay men that they would like to donate but were unable to.
Now the complete ban is being lifted. Until now, any man who had ever had sex with another man was barred for life from donation.
From 7 November the ban is being lifted in England, Scotland and Wales. But men who want to donate must not have had sex with another man in the past 12 months.
This deferral period has been left in place because there is a "window period" after infection with blood-borne viruses where they are not detectable.
This window period is far less than 12 months.
The report from the Advisory Committee on the Safety of Blood, Tissues and Organs (SaBTO) says that for HIV it varies from nine to 15 days, depending on the type of test. For hepatitis B, which causes liver disease, it is 66 days.
http://www.bbc.co.uk/news/health-14844413