Sure, but that's just you. Personally, I definitely support people electing to do experimental treatments on themselves, as long as there's sufficient oversight

Sure, but that's just you. Personally, I definitely support people electing to do experimental treatments on themselves, as long as there's sufficient oversight. Especially people who are close to dying anyways (e.g. maybe not at 35, maybe yes at 95). Not sure what you're getting at with transfusion vs. circulatory system... I see 3 options: (1) works in mice but not in humans, (2) works in humans with just blood, (3) works in humans but needs more than blood (either whole "young circulatory system" or just parts of it, e.g. hormones etc.). So, you might be willing to experiment that (2) holds. I mean, if you're opposed to this, if you're certain it's immoral, wouldn't you also be opposed to any trials as well? After all, this is similar to a trial... Sure, it doesn't have as much value to the society, as it's not blind randomized, but it might still have tremendous value to an individual.