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@Cheetah
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hilburn17✓ • 1h
By the reckoning of the NHSBT service they require 6,000 donations/day on average to keep up with demand.
They also state that the majority of 17-65 year olds are capable of giving blood. So let's say that's about 90%
According to census data, roughly 65% of the UK population are between 16-64, so presumably it's about the same for 17-65.
UK population is 64.1 million, so that's 41.7 million between 17 and 65, and of those 37.5 million people can give blood.
If they need 6,000 donations/day, that's just once every 6250 days, or 17 years and a month (and a bit). This means that if everyone donated blood at this rate, we would only need to give blood at most 3 times in our lives