No, you should not, according to the results of a recent study that Dalrymple writes about at Pajamas Media. But the more interesting part is this story in the column’s introduction:

I once worked in a remote country, much given to drunkenness, where people would only give blood to their relatives, though fortunately they lived in large families. A man there once had an accident requiring rapid and repeated transfusion. His family had all been at a party. After transfusion, he himself was drunk.