It's National Blood Week and ITV Border has previous looked at what happens and who benefits when blood is donated.
Amy Dunsmuir has been to the Cumberland Infirmary in Carlisle, to see what happens to the blood when it reaches the hospital:
More top news
Our experts take a look at the key issues that would face Scotland and the rest of the UK if Scots vote for independence.
A look ahead at the forecast for the Border region.
Thousands of people cross the border to visit their doctor. Patients on both sides are worried about the possible effects of a “yes” vote.