Answer: faulty stem cell injections from "stem cell injector to the stars" Dr. Adeel Khan

The claim is compelling. But the author's writing style–punctuated with needless character assasinations, e.g. the dig about not being a lumberjack, or hyperbolic rhetorical questions–makes me wanting for a better source. (Author says, at the end, they have experience as a journalist, so I want to underline that I'm going off style alone right now.)

I have worked for some rather wealthy seniors living on waterfront property. Of all that pursued expensive stem cell injections, not one of them said the injections had solved any of their prior problems.