THE number of women eligible to be stem cell donors is to be expanded in a bid to boost the number of potential donors on the UK register.

Health officials are trying to increase the potential stem cell donor pool to offer a better chance of a match for people in need of potentially life-saving treatment.

They also hope to reduce reliance on imported stem cell donations, which can cost 50 per cent to 100 per cent more than donations collected in the UK.

White women aged 17 to 40 will now be eligible to join the NHS Stem Cell Donor Registry.

Before the change, which comes into effect on Monday, only men aged 17 to 40 or women aged 17 to 40 of Asian or black heritage, or those of mixed ethnicity, could join.

White women aged 18 to 40 were able to join the register before 2016. This was stopped for a number of years and the rules have now changed to once again allow this group, as well as 17-year-old white women, to sign up.

A person's details remain on the register until their 61st birthday.

NHS Blood and Transplant (NHSBT) said the change has been made due to growing evidence that younger donors are linked to better transplant outcomes.

A woman who joined the register aged 18 after a friend died of leukaemia welcomed the changes to allow more women to donate.

Sarah Caddick, a finance administrator from Dudley, donated her stem cells in March 2024.

"I lost a friend to leukaemia when I was young and have always wanted to give something back," the 33-year-old said.

"I was ecstatic when, 14 years after signing up to the NHS Blood and Transplant British bone marrow register, I got the call to say I was a match for somebody in need.

"Like most donors, I donated via my blood stream - it was really similar to giving blood and was so simple.

"Allowing all women to join means that so many more people can register.

"Having donated myself and experienced how easy it is to potentially save a life, I urge everybody to sign up if they're eligible - you may be the one and only chance a person has."

NHSBT said that it needs about 30,000 people to newly sign on to the register each year.

It said the average age of people on the register is increasing every year and currently stands at almost 44.

This is despite the fact that 72 per cent of donations are taken from people aged under 40 due to the better chance of transplant success.

Yet only 35 per cent of people on the register are under 40.

For information on how to register and the donation process visit www.blood.co.uk/stemcells

Guy Parkes, head of stem cell donation and transplantation at NHS Blood and Transplant, said: "There is always a need for more stem cell donors and so we're thrilled to now be able to welcome all women aged 17 to 40 to the NHS stem cell donor registry, too.

"Growing research has shown that donor age is an important factor when it comes to transplants, so we're urging everybody under 40, male or female, to think about signing up.

"We would urge all eligible blood donors to say yes to stem cell donation and ask about signing up to the register at their next appointment - your stem cells could help to save a life."