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102,125 In a study that included 113 military personnel exposed to loud noise, B12 deficiency was detected in 47% of those with tinnitus plus noise-induced hearing loss, 27% of those with noise-induced hearing loss only, and 19% of those with normal hearing, suggesting B12 deficiency may be associated with risk of developing tinnitus

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Vitamin B12 given as hydroxocobalamin is usually intended for the muscle, and a needle that is too short can deposit it in the fat layer instead

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