Campaigners are marking World Blood Donor Day by calling for the ban and restrictions on gay men giving blood to be lifted globally.
Today (14 June), the World Health Organization (WHO) is urging people to be a 'hero' and give the 'life-saving gift' of blood.
On its website, the UN agency states that 'every one of us can become a hero simply by giving blood'.
However, gay and bisexual men in most countries around the world are banned entirely from donating and in many where it is allowed, are required to abstain from sex for at least a year.