TL;DR
When the penis is badly damaged, by a battlefield blast, an accident, cancer surgery or a scarring disease, surgeons can rebuild its shape, but natural erections are usually lost because the spongy erectile tissue inside cannot be replaced. Lab-grown erectile tissue aims to change that. In July 2026, a team at South China University of Technology reported that 3D-printed erectile tissue seeded with stem cells nearly fully rebuilt damaged erectile tissue in pigs and improved their ability to breed, building on its 2025 work that restored erections in rabbits and pigs. In the U.S., Wake Forest has a 10-man safety trial of engineered erectile tissue on the books, now listed to start in January 2027. All of this is reconstructive medicine for men who have lost tissue or function, and none of it is approved. It is built for repair, not enlargement, but tissue grown to order is exactly what a future enlargement treatment would need. To read the odds on lab-grown erectile tissue reaching patients and a timeline of the steps ahead, subscribe.
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