HHS-OASH-2026-0397-6695
https://www.regulations.gov/comment/HHS-OASH-2026-0397-6695

I submit this comment as an independent researcher to recommend a mechanism-resolved federal research program investigating potential biological effects of radiofrequency electromagnetic fields (RF/EMF), with particular attention to neurovascular function, mechanotransduction, and interactions between electromagnetic and acoustic exposures.

The central methodological problem is the frequent conflation of exposure, biological response, and causal mechanism. Demonstrating an exposure does not establish injury. Demonstrating a physiological response does not, by itself, identify the mechanism responsible.

I recommend that federal research prioritize experiments designed to distinguish competing explanations rather than merely accumulate observations that cannot be compared across laboratories.

Specifically, I propose a controlled, factorial experimental framework incorporating sham exposure, acoustic exposure alone, RF exposure alone, and combined acoustic/RF exposure, together with appropriate thermal, mechanical, and equipment-artifact controls.

The combined-exposure condition is especially important. A possible interaction between physical stimuli cannot be established by studying either stimulus independently. Investigators should explicitly test whether combined effects differ from predictions under a prespecified additive model.

Candidate biological endpoints include endothelial permeability, calcium signaling, barrier-associated protein localization, inflammatory signaling, and measures of neurovascular function. Mechanosensitive ion channels and integrin-associated signaling are among the pathways warranting investigation.

These pathways are proposed research targets, not established explanations of RF-associated neurological injury.

I further recommend standardized exposure reporting that preserves waveform characteristics, modulation, pulse timing, field strength, exposure geometry, temperature, acoustic conditions, and measurement uncertainty. Where relevant, temporal structure should be preserved rather than reduced to average intensity alone.

Federal agencies should coordinate reproducible protocols, preregistered endpoints, blinded assessment, independent replication, and public reporting of negative findings.

A shared reference dataset linking precisely characterized physical exposures to experimentally measured biological outcomes would improve scientific comparability and enable independent evaluation of competing mechanisms.

The objective should not be to validate a predetermined conclusion about RF/EMF exposure. It should be to establish which effects are reproducible, under what conditions they occur, and which mechanisms survive rigorous experimental controls.

My attached memorandum provides the proposed experimental framework, measurement priorities, research coordination recommendations, and falsifiability criteria in greater detail.