Hum, no. If you you drink someone's blood it goes trough your digestive system and it's processed that way, it doesn't become your blood, just provides you some

Hum, no. If you you drink someone's blood it goes trough your digestive system and it's processed that way, it doesn't become your blood, just provides you some nutrients. Besides you do that almost everyday, i.e. eat animals younger than you and in certain cuisines part of their blood. This here is something very different, allowing the blood to be used as is from an young individual in an older one.