RF Safe argues that non-thermal RF and ELF electromagnetic fields can have biological effects via a proposed “S4–Mito–Spin” framework, challenging the regulatory position that effects below heating thresholds are implausible. The article claims EMFs may couple into biology through voltage-gated ion channel S4 segments, mitochondria/NADPH oxidases (oxidative stress amplification), and spin-dependent radical-pair chemistry in redox cofactors. It presents this as a unifying mechanism intended to explain reported findings across cancer, fertility, immune, and blood-related studies, but it is framed as a conceptual synthesis rather than new peer-reviewed experimental results in the post itself.