rct
    2007
    High Quality

    Effects of folic acid supplementation on hearing in older adults: a randomized, controlled trial

    Durga J, Verhoef P, Anteunis LJ, Schouten E, Kok FJ

    Published in Annals of Internal Medicine

    Key Findings

    Folic acid 800 mcg/day for 3 years slowed decline in low-frequency hearing thresholds but had no effect on high-frequency hearing.

    Conclusions

    Folic acid modestly protects speech-frequency hearing in older adults with raised homocysteine in a non-fortified population.

    Supplements Studied

    After 3 years, thresholds of the low frequencies increased by 1.0 dB in the folic acid group and by 1.7 dB in the placebo group (difference, -0.7 dB; P = 0.020). Folic acid supplementation did not affect the decline in hearing high frequencies.

    Related Health Concerns

    Hearing Changes

    Study Details

    Year:2007
    Sample Size:728
    Quality Score:9/10

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    This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.