Wound Healing Impairment

Wounds that won’t heal are a growing medical problem. In elderly patients, diabetics, and immunocompromised individuals, the body’s repair machinery slows down — cuts that should close in days linger for weeks or months, vulnerable to infection and complications. Contributing factors include poor circulation, chronic inflammation that won’t resolve, bacterial colonisation, and deficiencies in the minerals needed for tissue repair.

Peat has one of the most remarkable historical connections to wound care of any natural material — and modern science is beginning to explain why it worked.

The sphagnum story

During World War I, acute shortages of cotton bandages forced military medics to improvise. They turned to sphagnum moss — the living plant that eventually becomes peat — as wound dressing material. It worked remarkably well, and for reasons that modern science can now explain:

• Absorbency. Sphagnum holds 20 times its dry weight in fluid, compared to 4–6 times for cotton. It kept wounds drier and cleaner.
• Antimicrobial protection. The acidic pH and phenolic compounds in sphagnum actively suppress bacterial growth — a natural antiseptic dressing.
• Mineral delivery. Sphagnum contains zinc and iron, both essential for tissue repair, delivered directly to the wound bed.

This isn’t folk medicine — it’s documented military medical history (Painter 1991).

Why peat may help modern wound care

The same properties that made sphagnum effective as a wound dressing are present in concentrated form in humified peat.

Stimulating repair cells. A rat wound study found that a 0.5% fulvic acid poultice produced fibroblast counts three times higher than control and angiogenesis (new blood vessel formation) 3.5 times higher (Samiee-Rad 2022). Fibroblasts build the collagen scaffold that new tissue grows on; angiogenesis brings blood supply to the repair site. Both are critical bottlenecks in delayed healing.

Resolving stuck inflammation. Chronic wounds are often stuck in the inflammatory phase — the body can’t transition from “fighting infection” to “rebuilding tissue.” Fulvic acid promotes wound healing via the Nrf2 pathway and overexpression of IL-10, an anti-inflammatory signal that helps shift the wound from inflammation to repair (Benderskiy 2022). A scratch assay confirmed fulvic acid’s pro-regenerative effect on cell migration (Szwed-Georgiou 2026).

Preventing infection. The antimicrobial properties of humic acids and peat’s acidic pH create an environment hostile to the bacteria that colonise chronic wounds.

What the evidence says

The evidence splits into two categories: strong historical evidence and promising but early modern research.

Historical: The use of sphagnum moss in wound management through WWI is well-documented (Painter 1991). This isn’t anecdote — it was systematic military medical practice born of necessity and validated by outcomes.

Modern: The Samiee-Rad (2022) rat wound study is the most concrete modern evidence — showing that fulvic acid dramatically accelerates the cellular processes of wound repair. The mechanism-level evidence (Benderskiy 2022, Szwed-Georgiou 2026) supports this through identified pathways.

What’s missing: Human clinical trials of peat-derived wound treatments. The sterility and standardisation challenges of applying peat-based products to open wounds have limited modern clinical investigation. Any wound care application would need to use sterile peat extracts, not raw peat material.