The study’s vagueness and the claim’s magnitude do raise eyebrows, but the idea that hyperbaric oxygen could influence telomeres isn’t entirely out of the realm of possibility—just not with that level of certainty.

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The mechanism by which telomeres shorten is complex and not easily reversed, even with oxygen therapy. While HBOT might have some regenerative effects, claiming a 20-year reversal is a stretch without concrete evidence.

The mechanism by which telomeres shorten is complex and not easily reversed, even with oxygen therapy. While HBOT might have some regenerative effects, claiming a 20-year reversal is a stretch without concrete evidence.

The study's vagueness is a problem, but the fact that telomeres can be influenced by oxygen levels isn't entirely out of the question. The real issue is how much of a change they're claiming.