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The discovery of a relatively heavy Standard Model (SM) -like Higgs bosonchallenges naturalness of the minimal supersymmetric standard model (MSSM) fromboth Higgs and dark matter (DM) sectors. We study these two aspects in the MSSMextended by the low-scale inverse seesaw mechanism. Firstly, it admits asizable radiative correction on the Higgs boson mass m_h, up to \sim 4 GeV inthe case of an IR-fixed point of the coupling Y_\nu LH_u\nu^c and a largesneutrino mixing. Secondly, the lightest sneutrino, highly complex as expected,is a viable thermal DM candidate. Owing to the correct relic density andXENON100, two cases survive: a Higgs-portal complex DM with mass lying aroundthe Higgs pole or above $W$ threshold, and a coannihilating DM with slimprospect of detection. Given an extra family of sneutrinos, both scenariosnaturally work when we attempt to suppress the DM left-handed sneutrinocomponent, confronting with enhancing m_h.

Higgs Boson Mass and Complex Snuetrino Dark Matter in the Supersymmetric Inverse Seesaw Models