I didn’t see any mentioning of how to stop it.
Yes, this is still a theory. They’re gonna be working on that next, if someone will fund their research.
Me either. The article suggests a theory and that people are "working on it", but no solution as yet.
I've had gray hair since my 40s and I learned to embrace it. I thought briefly about doing that Just For Men hair dye routine but decided it would be too much trouble and too expensive maintaining it. Plus, dye damages your hair over time.
Recently I decided to grow it out and getting a lot of compliments. Well maintained hair looks good whether gray or not. On the female side, Emmylou Harris is an example of somebody who looks great with long gray hair. Further below is the look I'm going for. Probably about halfway there at this point (I'm 60).