For decades, blood banks have discarded platelets after seven days without question, treating age as synonymous with diminished value. A new study challenges that assumption, finding that the tiny vesicles shed by aging platelets carry a richer cargo of healing signals than their fresher counterparts — suggesting that what we have long called waste may, in fact, be medicine. The discovery invites a broader reckoning with how we understand biological time, and what transformation, rather than degradation, might mean for the future of wound care.