  The coupling between the spin of a massive Dirac fermion and the angular
momentum of the medium, i.e. the gravitomagnetic moment, is shown here to be
renormalized by QED interactions at finite temperature. This means that the
anomalous gravitomagnetic moment (AGM) does not vanish, and implies that
thermal effects can break the Einstein equivalence principle in quantum field
theory, as argued previously. We also show that the AGM causes radiative
corrections to the axial current of massive fermions induced by vorticity in
quantum relativistic fluids, similarly to the previous findings for massless
fermions. The radiative QCD effects on the AGM should significantly affect the
production of polarized hadrons in heavy-ion collisions.
