Bryan Johnson defends his anti-aging work against accusations of snake oil by pointing to DNA methylation and other biomarkers instead of appearance. He argues you need objective data, not how someone looks, to know if aging is actually slowing down.
People look at this endeavor, they hear a rich person spending millions trying to be like, 18. They look at my face and they say, that son of an 18 year old is not working. But they don't know how to think through. Maybe there's other ways to assess whether this thing is working. For example, looking at DNA methylation patterns or any other measurement, but they just. Most people don't think that way. The drawback is some people look at that and they say, it's snake oil. It's a sham. That's not true because with their eyes, they can't connect with my face. We're trying to correct for a basic age marker. So people look at me and they say, hmm. Okay, open. What's going on here?
