Applying the phenomenon of neutrino lasing in the solar interior we sh
ow how the rate for the generic neutrino decay process nu --> fermion
+ boson can in principle be enhanced by many orders of magnitude over
its normal decay rate. Such a large enhancement could be of import to
neutrino-decay models invoked in response to the apparent deficit of e
lectron neutrinos observed from the Sun. The significance of this resu
lt to such models depends on the specific form of the neutrino decay,
and the particle model within which it is embedded.