  We use the framework of dark matter effective field theories to study the
complementarity of bounds for a dark matter particle with mass in the MeV
range. Taking properly into account the mixing between operators induced by the
renormalization group running, we impose experimental constraints coming from
the CMB, BBN, LHC, LEP, direct detection experiments and meson decays. In
particular, we focus on the case of a vector coupling between the dark matter
and the standard model fermions, and study to which extent future experiments
can hope to probe regions of parameters space which are not already ruled out
by current data.
