  In this paper we consider a static and regular fluid generating a locally
spherically symmetric and time-independent space-time and calculate the leading
quantum corrections to the metric to first order in curvature. Starting from a
singularity free classical solution of general relativity, we show that
singularities can be introduced in the curvature invariants by quantum
gravitational corrections calculated using an effective field theory approach
to quantum gravity. We identify non-trivial conditions that ensure that
curvature invariants remain singularity free to leading order in the curvature
expansion of the effective action.
