Research suggests that humic acid and related humic substances demonstrate notable anti-inflammatory properties across a range of experimental contexts, including models of periodontal disease, spinal cord injury, kidney damage, inflammatory bowel disease, wound healing, and skin conditions such as atopic dermatitis and psoriasis. Studies indicate that proposed mechanisms include suppression of pro-inflammatory cytokines such as TNF-alpha and IL-1 beta, inhibition of NF-κB signaling pathways, scavenging of reactive oxygen and nitrogen species, and modulation of macrophage activity toward tissue-repair-associated states. The available evidence base consists almost entirely of animal studies and laboratory cell culture experiments, with no published human clinical trials directly evaluating humic acid's anti-inflammatory effects, and a 2025 review notes that compositional variability and potential toxicity under certain conditions remain important unresolved concerns. One systematic review also flagged that humic acid may worsen pulmonary emphysema, and a 2010 skin study found that the mineral fraction of humic-rich mud outperformed humic acid itself in suppressing inflammation, underscoring that the full picture is more complex than the largely supportive experimental literature alone might suggest.
Citations from PubMed and preprint sources. Match score (0-100) reflects automated search ranking, not clinical appraisal.
| Title | Type | Year | Direction | Match |
|---|---|---|---|---|
| Anti-ROS and NIR-II-Responsive Hyaluronic Acid Microneedle Loaded With Baical... | Other | 2024 | Supports | 100 |
| Humic Acid Derived from Agricultural Biomass Mitigates Alveolar Bone Loss and... | Other | 2025 | Supports | 95 |
| Effect of Humic Acid on Oxidative Stress and Neuroprotection in Traumatic Spi... | Other | 2021 | Supports | 90 |
| Shilajit extract (ZhaXun) protects against acetaminophen-induced liver injury... | Other | 2026 | Supports | 85 |
| In vitro determination of inhibitory effects by humic substances complexing Z... | Other | 2021 | Neutral | 85 |
| Humic acid attenuates cisplatin-induced nephrotoxicity in rats. | Other | 2025 | Supports | 80 |
| Humic Acid Derived from Vermicompost Inhibits Alveolar Bone Degradation and P... | Other | 2024 | Supports | 75 |
| Fulvic Acid Attenuates Atopic Dermatitis by Downregulating CCL17/22. | Other | 2023 | Supports | 70 |
| Water-retentive and anti-inflammatory properties of organic and inorganic sub... | Other | 2010 | Mixed | 65 |
| Biomedical Applications of Humic Substances: From Natural Biopolymers to Ther... | Review | 2025 | Supports | 60 |
| Natural products in the treatment of pulmonary emphysema: Therapeutic effects... | Review | 2022 | — | 55 |
| The effect of combining humic and fulvic acids poultice on wound healing in m... | Other | 2024 | Supports | 50 |
| Alchemizing earth's legacy: Bismuth-engineered humic nanoparticles for IBD th... | Other | 2025 | Supports | 45 |
| Waste to Wealth: Near-Infrared/pH Dual-Responsive Copper-Humic Acid Hydrogel ... | Other | 2023 | Supports | 40 |
| Sorption, photodegradation, and chemical transformation of naproxen and ibupr... | Other | 2016 | Neutral | 35 |
| The effect of topical 0.5% humic acid gel on male rats with skin ulcer. | Other | 2024 | Supports | 30 |