From Masking to Redox Rescue: Oxidative and Nitrosative Stress in Tinnitus and Glutathione as the Master Antioxidant Against Non-Ionizing Electromagnetic Aggressors

Tinnitus is a highly prevalent symptom, affecting about 14% of adults worldwide, and there is a growing consensus that its pathophysiology converges on the phenomenon of central gain: the auditory nervous system increases its sensitivity to compensate for reduced or degraded peripheral input. In parallel, an expanding body of evidence identifies oxidative and nitrosative stress as an underlying molecular mechanism of cochlear damage and of auditory pathway vulnerability. This work, which expands and reframes an earlier introductory draft, proposes an integrative two-axis clinical thesis that we call the "missing link" in the approach to tinnitus. The first axis concerns endogenous defense resources: on the basis of the evidence and of more than fifteen years of clinical practice in integrative analysis, we contend that antioxidants such as coenzyme Q10 (CoQ10) and vitamin C are beneficial but insufficient because they are not multifocal, whereas glutathione (GSH) acts as the master antioxidant that regenerates and coordinates the antioxidant network. The second axis concerns a frequently overlooked exogenous aggressor: ultra-weak, non-ionizing electromagnetic fields (EMF) from highly polluted household electrical networks and from wireless telecommunication signals, which act as stressors of the nervous system and as promoters of free radicals capable of disrupting the nitric oxide cycle and oxidizing glutathione. We present this EMF → oxidative/nitrosative stress → glutathione depletion relationship as a hypothesis with a mechanistic and clinical basis, explicitly distinguishing what has been demonstrated from what is proposed, and we open the discussion toward a new clinical thesis of tinnitus.