The study (pubmed 41655127, been circulating here recently) identified 37 proteins in centenarians whose expression profiles looked more like younger adults than like octogenarians. The oxidative stress angle is real and worth attention. But the part that keeps nagging at me is what it implies for the “optimize your GH axis for longevity” framing that dominates this community. There’s a consistent thread across centenarian research, not just this paper, that extreme longevity correlates with lower-end-of-normal IGF-1, not optimized-high. Not deficient, but not where GH secretagogue protocols are trying to push things. The reason this matters: IGF-1 is pro-oxidant at higher levels. If centenarians have “young” protein signatures specifically around oxidative stress markers, and they also tend to run lower IGF-1, those two findings are probably not unrelated. I’m not dismissing CJC/ipa entirely. Sleep architecture, body composition, recovery data are there for specific populations. But the framing of GH secretagogues as anti-aging tools runs directly into the centenarian biology. The people who actually make it to 100 don’t appear to have done it by maximizing GH output. The specific question I’d want answered from this paper: were the 37 proteins correlated with IGF-1 levels in the centenarian cohort? The study emphasizes oxidative stress proteins as a class, but the GH axis connection to that class is exactly what I’d want pulled apart. That mechanistic link would change how I read the longevity implications significantly. If someone brings me this paper as justification for a longevity peptide stack, my first question is still the same one: what’s your fasting IGF-1? That number puts the protein data in actual context. Without it you’re just pattern-matching abstracts to a protocol you already wanted to run.