He pushes some theoretical "cell repair" supplements like NMN and resveratrol, but he is repetitively clear they're experimental, and that his evidence is anecdotal.
I understand he is invested in them, but I don't jump to "fraud" because of that.
His team had other groundbreaking results, such as partially restoring damaged optical nerves in mice by injecting a virus in the eye[1].
1. https://www.science.org/content/article/researchers-restore-...