I wonder if studies like this could eventually have an impact on blood donor age ranges?<p>The Red Cross[1] current lower limit is 17 (16 with guardian consent), with no upper limit as long as donor is well & not restricted in activity.<p>[1] <a href="http://www.redcrossblood.org/donating-blood/eligibility-requirements/eligibility-criteria-topic" rel="nofollow">http://www.redcrossblood.org/donating-blood/eligibility-requ...</a>