based on the assumption that human blood can survive in a vampire for about the same amount of time it can in a human body, vampires would only need to feed three or four times a year (red blood cells live about 110 days on average). this would be if they completely drained all their victims.
humans can survive losing up to about 40% of their blood, which means that a vampire pushing their limits with each victim would probably need to feed 12 times a year minimum
so like once a month
Hey guess what else happens once a month involving blood
omg no
Now that’s recycling
“Actually, period blood would be really good for a vampire; it’s incredibly nutritious, because it’s supposed to feed a foetus! And it’s probably the cleanest blood in the human body. It’s sterile.” My wife contributed.
Vampire lesbians
This is an actual scene in Memnoch the Devil by Anne Rice. Lestat earns his red wings; everybody comes away happy.
