in the context of the curen coronavirus attention, it has been suggested that Blood Type A is more protective than others.
PREPRINT- not peer reviewed!
Given how easy it should be to investigate the topics with modern big data tools, it is surprising how little attention has been paid to blood type oan longevity - but there have been a few studies. Those suggest that Type O is 'best' for longevity, and that type A is actually not that prevalent in the oldest.
Arash Etemadi, Farin Kamangar, Farhad Islami, Hossein Poustchi, Akram Pourshams, Paul Brennan, Paolo Boffetta, Reza Malekzadeh, Sanford M Dawsey, Christian C Abnet & Ashkan Emadi
BMC Medicine volume 13, Article number: 8 (2015)
Genetic determinants of extreme longevity: the role of ABO blood group
Massimo Franchini; Carlo Mengoli; Carlo Bonfanti; Chiara Rossi; Giuseppe Lippi