  In this work we perform global fits of microscopic decoherence models of
neutrinos to all available current data, including LSND and KamLAND spectral
distortion results. In previous works on related issues the models used were
supposed to explain LSND results by means of quantum gravity induced
decoherence. However those models were purely phenomenological without any
underlying microscopic basis. It is one of the main purposes of this article to
use detailed microscopic decoherence models with complete positivity, to fit
the data.The decoherence in these models has contributions not only from
stochastic quantum gravity vacua operating as a medium, but also from
conventional uncertainties in the energy of the (anti)neutrino beam. All these
contributions lead to oscillation-length independent damping factors modulating
the oscillatory terms from which one obtains an excellent fit to all available
neutrino data, including LSND and Kamland spectral distortion.
