I've had pretty strong cravings for blood since childhood. Almost as long as I can remember... I have no idea why. I've brought it up with doctors before and I've had blood tests done for anemia, protein deficiency and iron deficiency and pretty much everything else - and my levels are always perfect.

Sometimes the cravings are so bad, I will bite my lip or tongue hard enough to draw blood.

It's honestly driving me crazy. I want to know what my problem is... but no doctor has any idea, and in my own research I haven't really found fuck all.