June 20, 2026
Limb-itless possibilities
The ability to regrow body parts is dormant in mammals, not lost
Scientists say our bodies may still know how to regrow parts — and commenters are losing it
TLDR: Researchers say mammals may still have a hidden ability to regrow some damaged body parts by nudging healing away from scar tissue. Commenters are split between excitement, "haven't we seen this before?" skepticism, and one big fear: if you push repair too hard, do you also push cancer?
Scientists at Texas A&M just dropped the kind of headline that makes people immediately check whether human upgrade season has begun: mammals may not have lost the ability to regrow body parts after all — it may just be switched off. In the study, researchers used a two-step treatment to push normal wound healing away from scar-making and toward rebuilding bone, ligaments, and joint tissue. Not full sci-fi limb regrowth yet, but enough to get the internet loudly asking, "So... when do we get the salamander patch?"
And the comments? Absolute chaos. One camp went straight to hope mixed with terror, warning that speeding up healing sounds great until it also speeds up cancer. That tension — miracle cure or dangerous overclocking of the body — was the thread's biggest serious debate. Others were already in fact-check mode, insisting this isn't entirely new and pointing to old stories about fingertip regrowth and that famous BBC report about a man allegedly regrowing part of a finger. Another commenter brought in eye research, noting that some animals can repair the retina while mammals usually scar instead — and that trying to force repair can trigger tumors. Oof.
Then, because the internet can never resist a left turn, one joker basically asked if this is what Jesus was using all along. So yes: the science is promising, the stakes are huge, and the community response is a glorious mix of cautious optimism, old-link detectives, trauma dumping, and top-tier resurrection humor.
Key Points
- •Texas A&M researchers reported evidence that regenerative capacity in mammals may be dormant rather than absent.
- •The study, published in Nature Communications, used a two-step treatment involving FGF2 followed by BMP2.
- •The treatment redirected wound healing away from fibrosis and toward formation of a blastema-like structure.
- •Researchers observed regeneration of bone, joint structures, and ligaments, although the new tissues were not perfect replicas.
- •The article says the findings suggest regeneration may be possible without adding external stem cells, by reprogramming cells already present at the injury site.