Bryan Johnson, the tech entrepreneur spending $2 million a year to reverse his biological age, recently shocked the longevity community by announcing a Bryan Johnson Rapamycin reset. For a man who built his entire life around the Blueprint protocol, stopping a foundational longevity drug highlights the volatile nature of extreme biohacking. This decision followed a…

The pursuit of longevity often leads researchers and self-experimenters to rapamycin, yet many fail to realize that sirolimus bioavailability is not a fixed number—it is a moving target dictated by chemical engineering. While the active molecule remains the same, the vehicle delivering it determines whether you achieve life-extending mTOR inhibition or simply expensive, unabsorbed waste.…