Jump to contentAllNewsSportCultureLifestyleNHS Blood and Transplant has issued an urgent appeal for donors after blood stocks were hit by a combination of hot weather, summer holidays, and high hospital demand. Heatwaves reduce donation rates by up to 10 per cent due to donor dehydration and lower iron levels, while simultaneously increasing the blood volumes required by patients. Health officials are particularly calling for donors with B negative, O negative, and Ro subtype blood, as well as donors of Black heritage, to make appointments. Blood supply organisations in England, Canada, and Australia have united for a joint appeal, revealing that supplies across the three nations have dropped by up to 30 per cent recently. NHSBT is aiming to fill 60,000 summer appointments to rebuild national stocks and ensure the system can withstand seasonal disruptions. In fullUrgent appeal for blood donors as ‘triple whammy’ of factors lead to low UK reserveMore bulletinsThank you for registeringPlease refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in