This paper explores the constraints on neutrino mass using a combination of background observations, including cosmic chronometers, distance moduli from Gamma Ray Bursts (GRBs), angular diameter distances from galaxy clusters, and Hubble rate measurements from cosmic chronometers. The authors find that these observations tighten the neutrino mass bound below the minimal expectations from neutrino oscillation experiments, suggesting non-standard neutrino or cosmological scenarios. The most stringent limit is $\sum m_{\nu} < 0.043$ eV at 2σ, obtained by combining Cosmic Microwave Background (CMB) Planck data with DESI BAO, Supernovae Ia, GRBs, cosmic chronometers, and galaxy clusters. This tension between neutrino oscillation results and cosmological analyses highlights the need for alternative physics beyond the standard model of particle physics and cosmology. The study also demonstrates the robustness of these constraints, showing that all values of the Hubble constant are consistent within the 1-2σ level, and that the background measurements have a strong potential to constrain neutrino mass.This paper explores the constraints on neutrino mass using a combination of background observations, including cosmic chronometers, distance moduli from Gamma Ray Bursts (GRBs), angular diameter distances from galaxy clusters, and Hubble rate measurements from cosmic chronometers. The authors find that these observations tighten the neutrino mass bound below the minimal expectations from neutrino oscillation experiments, suggesting non-standard neutrino or cosmological scenarios. The most stringent limit is $\sum m_{\nu} < 0.043$ eV at 2σ, obtained by combining Cosmic Microwave Background (CMB) Planck data with DESI BAO, Supernovae Ia, GRBs, cosmic chronometers, and galaxy clusters. This tension between neutrino oscillation results and cosmological analyses highlights the need for alternative physics beyond the standard model of particle physics and cosmology. The study also demonstrates the robustness of these constraints, showing that all values of the Hubble constant are consistent within the 1-2σ level, and that the background measurements have a strong potential to constrain neutrino mass.