How rare is that?
🅾️ Blood type O negative
1 in 14 of US adults
About 7 of every 100 US adults are in this group. The universal donor. Blood banks love you.
Each figure stands for one percent of the group. The share is a rounded estimate from public surveys and published studies; the group it refers to is "US adults", which is not always the whole world.
Tick it on the Ladder → and combine it with everything else about you