Condition
    Effectiveness 2/5

    Magnesium for Hearing Changes

    Magnesium may reduce acute noise-induced hearing injury in high-exposure settings, based on small trials in military recruits. It does nothing for age-related loss.

    Overview

    Magnesium may reduce acute noise-induced hearing injury in high-exposure settings, based on small trials in military recruits. It does nothing for age-related loss.

    Verdict

    Mixed evidence

    Small military trials suggest magnesium blunts temporary noise-induced threshold shift. Not a substitute for hearing protection and not a treatment for established loss.

    How It Works

    Noise trauma triggers glutamate excitotoxicity at inner hair cell synapses and cochlear vasoconstriction. Magnesium blocks NMDA receptor overactivation and acts as a vasodilator, plausibly limiting both mechanisms during intense sound exposure.

    Dosing & Protocol

    Typical dose

    Recommended dose
    200-400 mg elemental magnesium daily
    Expected timeframe
    Any protective effect applies during the exposure period itself, not retrospectively.

    Protocol

    form
    Magnesium aspartate or citrate
    duration
    Taken across the period of noise exposure
    co factor
    Evidence is mixed - magnesium reduced temporary threshold shift after noise exposure in small trials but has not been shown to restore existing hearing loss. Hearing protection remains the intervention that works.
    titration
    No titration; the trial doses were fixed
    starting dose
    Prevention context only: 122-167 mg elemental magnesium daily was used in military noise-exposure trials

    Evidence

    What the studies say

    Attias and colleagues randomised Israeli military recruits to 167 mg of elemental magnesium daily during two months of rifle training and found significantly less permanent threshold shift than placebo. A follow-up crossover study showed reduced temporary threshold shift after noise exposure. Both trials were small, single-centre and conducted decades ago, and no adequately powered replication exists. A Cochrane-style appraisal of antioxidants and magnesium for noise-induced hearing loss concluded that evidence remains too sparse to recommend routine use. There is no trial evidence in presbycusis or sudden sensorineural loss.

    Antioxidant vitamins and magnesium and the risk of hearing loss in the US general population

    Score: 5/10
    2014
    observational
    n=2592

    Choi YH, Miller JM, Tucker KL +2 more

    High intakes of beta-carotene or vitamin C combined with high magnesium compared with low intakes of both nutrients were significantly associated with lower (better) PTAs at high frequencies.

    View source

    An Oral Combination of Vitamins A, C, E, and Mg++ Improves Auditory Thresholds in Age-Related Hearing Loss

    Score: 4/10
    2018
    observational
    n=40

    Alvarado JC, Fuentes-Santamaria V, Gabaldon-Ull MC +1 more

    An oral combination of vitamins A, C, E, and Mg++ improves auditory thresholds in age-related hearing loss.

    View source

    Safety

    Caveats

    Magnesium oxide is poorly absorbed and laxative; glycinate or citrate are better tolerated. Dose reduction needed in chronic kidney disease.

    Less likely to help if

    Anyone with established age-related loss, and anyone using it in place of ear protection.

    Medical Disclaimer

    The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any supplement regimen.

    Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.