Studies have repeatedly demonstrated that blood donors experience lower mortality than the general population, but some have suggested that this may be due to healthier people donating blood.
A 2015 analysis of the Scandinavian Donation and Transfusion database (SCANDAT) found that after adjusting for the internal healthy donor effect, each additional annual donation of blood was associated with a 7.5% decreased risk of death over some number of years.
(I’m waiting for a copy of the study to find out the average number of years of follow-up.)
In other words, the more frequent someone donated blood, the lower their risk of death.
The analyses included 1,182,495 donors of whom 15,401 died during 9,526,627 person-years of follow-up.
© Copyright 2003-2017 - Larry Hobbs - All Rights Reserved.