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Research Bioeffects

Russian theorists propose a quantum alternative to the radical pair model for weak magnetic field effects on cells

October 20, 2026 (EMFS)
Oct 3, 2026 (original)
Source: International Journal of Molecular Sciences
Source category: Research
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Three researchers at Moscow's Federal Scientific and Clinical Center for Space Medicine and Biology propose a new quantum explanation for how very weak magnetic fields affect living cells, built not on the radical pair model but on the quantum motion of a sub-nanometre molecular rotator standing in for an amino acid inside an enzyme. In their calculations the effect reaches tens of percent in fields below 50 microtesla, close to the Earth's own field, and would let the geomagnetic field keep biosynthesis nearly error-free while raising error rates when the field is removed. The authors are explicit that the idea is tentative and has no direct experimental support. It is a direct counterpoint to our May coverage, where a planarian experiment found the radical pair model held up.

Quotes

"The radical pair mechanism (RPM) struggles to explain the biological effects of weak magnetic fields due to rapid spin decoherence."

— Binhi et al., International Journal of Molecular Sciences (2026)

"To address this, we propose a mechanism based on the quantum dynamics of a sub-nanometric (<0.5 nm) molecular rotator modeling an amino acid residue within a biosynthesizing enzyme."

— Binhi et al., International Journal of Molecular Sciences (2026)

"The rotator mechanism implies that evolution has adapted organisms to use the geomagnetic field for nearly error-free biosynthesis; under hypomagnetic fields, biosynthetic errors increase."

— Binhi et al., International Journal of Molecular Sciences (2026)

Location

📍 Russia

Map: Russia

Source

Mechanisms of Hypomagnetic Field Biological Effects: Quantum Rotator Versus Radical Pair www.mdpi.com

📄 Underlying Research

Mechanisms of Hypomagnetic Field Biological Effects: Quantum Rotator Versus Radical Pair

Binhi V, Usovik I, Koshel I (2026) International Journal of Molecular Sciences Journal Level 0ⓘ

🔗 DOI 📰 Full Article

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