Why is blood type O most frequent?

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Researchers identify association between blood groups and longevity. Having a non-O blood group is associated with an increased risk of death, particularly from cardiovascular disease (such as ischemic heart disease and stroke), according to research published in open access journal BMC Medicine.
http://rhesusnegative.net/rhnegativeforum/index.php/topic,68.0.html

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4 Comments

  1. Robin Pryh May 26, 2020 Reply
  2. Robin May 26, 2020 Reply
  3. Richard Youatt May 26, 2020 Reply
  4. - Ken - June 8, 2020 Reply

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