Aging is a natural process, but the pace at which we age is not fixed. At the cellular level, aging is driven by measurable, well-understood forces: declining oxygen delivery to tissues, slowing repair and regeneration, chronic low-grade inflammation, and a drop-off in stem cell activity. Hyperbaric oxygen therapy (HBOT) acts directly on each of these mechanisms. With more than 50 years of clinical research and thousands of peer-reviewed studies behind it, HBOT is one of the