They offered customers over the age of 35 injections of young plasma — the liquid component of blood that blood banks usually store — from donors ages 16 to 25. (science.howstuffworks.com)
The authors note that it is the first study to conduct an analysis of the effect of sperm donor age on live birth using a large national database. (sciencedaily.com)
Building on previous studies, the relationship between donor age and patient survival was shown to be linear. (regmednet.com)