Study finds electric current triples healing

Chalmers University of Technology and the University of Freiburg reported in a 2023 peer-reviewed study that low-level direct current accelerated wound closure in a lab-grown skin model by nearly threefold. The work, published in *Lab on a Chip*, is the study behind a social-media claim circulating on September 6 and 7, 2026 that electric current can make wounds heal “3x faster.” The researchers tested human keratinocytes — the main cell type in the outer skin layer — in a microfluidic “wound-on-a-chip” device rather than in human patients. The paper found faster closure in both healthy and diabetic-like cell models when an electric field was applied. ### Which study is the viral post referring to? The paper is titled “Bioelectronic microfluidic wound healing: a platform for investigating direct current stimulation of injured cell collectives,” and it appeared in *Lab on a Chip* in 2023. The listed authors include Sebastian Shaner and Maria Asplund, with affiliations including the University of Freiburg and Chalmers University of Technology. (pubs.rsc.org) Chalmers said in an April 18, 2023 release that the team had developed a method using electric stimulation that made wounds heal three times faster in artificial skin. ScienceDaily and other outlets later summarized the same result from the university release. ### Did the study actually test people or animals? The 2023 study used in vitro models, not human or animal wound trials. (pubs.rsc.org) The researchers cultured human keratinocytes on a chip, created small wounds in the cell layer, and compared electrically stimulated wounds with unstimulated controls. The paper also included a culture-based model designed to mimic diabetic keratinocytes, because impaired wound healing is a major problem in diabetes. (chalmers.se) That means the “3x faster” result came from controlled laboratory experiments on cells, not from a clinical test of bandages or electrodes on patients. ### What exactly got faster? The researchers reported that electric guidance cues of about 200 millivolts per millimeter increased wound-closure rates by nearly threefold for both healthy and diabetic-like keratinocyte sheets. (pubs.rsc.org) In the diabetic-like model, the paper said wound-closure rates increased from 1.0% per hour to 2.8% per hour with stimulation, approaching the rate seen in healthy unstimulated cells. Maria Asplund said in the Chalmers release that the stimulated wound healed “three times as fast” as the wound without electric stimulation. The proposed mechanism is electrotaxis — the tendency of skin cells to move directionally in an electric field rather than randomly. ### Is this idea new, or is there broader evidence behind it? (biorxiv.org) A 2021 review indexed by PubMed said electrical stimulation can accelerate wound healing, especially in chronic wounds, and summarized 12 randomized controlled trials of pulsed current in chronic wounds. The review said those trials showed larger wound-size reduction and faster healing than control groups, while also noting that study designs and stimulation parameters varied widely. (chalmers.se) A 2025 *Scientific Reports* paper looked at electrode placement in electrical stimulation for wound healing, and newer 2026 Nature-family papers described wearable or self-powered electrotherapy systems that accelerated wound closure in animal studies. Those later papers point to ongoing device development, but they are separate from the 2023 “3x faster” cell-study result now circulating online. (pubmed.ncbi.nlm.nih.gov) ### So how should readers read the “triples healing” claim? The most precise version is that a 2023 *Lab on a Chip* study found nearly threefold faster wound closure in lab-grown human skin-cell models exposed to low-level direct current. The evidence does not show that ordinary wounds in people will heal three times faster today with an off-the-shelf electrical treatment. (nature.com) The next place to look is the *Lab on a Chip* paper itself and follow-on studies in wound-healing devices, including 2025 and 2026 reports on electrode design and wearable electrotherapy platforms. (pubs.rsc.org)