What it is
Redox is short for reduction–oxidation: the transfer of electrons between molecules. What makes humic substances biologically interesting is that they are redox-active in both directions — able to accept electrons and to donate them — which is unusual and useful.
How it works
By donating electrons, fulvic acid can act as an antioxidant, quenching reactive species; by participating in electron transfer, it is proposed to support mitochondrial electron transport, with the dibenzo-α-pyrones studied as electron carriers. Honest framing: the environmental-chemistry evidence for redox capacity is strong; the clinical translation is mostly preclinical.
At a glance
What the literature shows
Strong chemistry for redox capacity; the human translation is still developing.