We explore the effects of electromagnetic (EM) fluctuations in plasmas on
solar neutrino fluxes exploiting the fluctuation-dissipation theorem. We find
that the EM spectrum in the solar core is enhanced by the EM fluctuations due
to the high density of the Sun, which increases the radiation energy density
and pressure. By the EM fluctuations involving the modified radiation formula,
the central temperature decreases when the central pressure of the Sun is
fixed. With a help of the empirical relation between central temperature and
neutrino fluxes deduced from the numerical solar models, we present the change
in each of the solar neutrino fluxes by the EM fluctuations. We also discuss
the enhanced radiation pressure and energy density by the EM fluctuations for
other astronomical objects