  We present lattice QCD simulation results from the European Twisted Mass
Collaboration (ETMC) for the light, strange and charm quark contents of the
nucleon. These quantities are important ingredients to estimate the
cross-section for the detection of WIMPs as Dark Matter candidates. By
employing a particular lattice QCD formulation, i.e. twisted mass fermions,
accurate results of the light and strange scalar contents of the nucleon can be
obtained. In addition, we provide a bound for the charm quark content of the
nucleon.
