Other remedies such as NMN and resviratrol have already proven in mice to work exquisitely well. Hope those will translate as more accessible solutions first, vs young boy blood transfusions.
I'm holding more hope for rapamycin, which was shown to prolong life span in mice in many studies.
However, a number of the very rich are living quite a long time, and while they are visibly aging they are not aging as much as one would expect.
This leads me to suspect that there is some kind of treatments that are expensive (like blood boys) that have some level of efficacy.