From Richard Lucas, Camberley, Surrey, UK
Ruby Prosser Scully continues a story that has rumbled through the pages of New Scientist for the past couple of years, lending hope that ageing could be delayed by transfusions of young blood (8 June, p 7). Having been a regular blood donor for 45 years, I observe that the majority of donors are, like myself, older. The likelihood is that the donated blood will find its way into a younger recipient, presumably having the opposite effect to young blood. Has this been thought through? Should donated blood be “age stamped”?
