[The levels of vitamins A, E, B12 and folic acid in noise-induced hearing loss]

Kulak Burun Bogaz Ihtis Derg. 2004;12(3-4):60-4.
[Article in Turkish]


Objectives: To investigate the levels of vitamin A, E, B12, folic acid in employees with hearing loss due to noise.

Patients and methods: Employees in a local hydroelectric powerhouse who suffered from hearing loss due to noise were included in the study. Study and control groups were composed of 28 employees (mean age 37+/-5 years) and 30 voluntary subjects (mean age 36+/-4 years), respectively. All the subjects in patient and control groups were males. Blood samples were obtained from all subjects and vitamin A, E, B12 and folic acid levels were measured.

Results: Level of vitamin B12 was found low in the patient group and normal in the control group and these were found statistically significant (p<0.005). There were no significant differences between vitamin A, E and folic acid levels.

Conclusion: We think that measurement of vitamin B12 in routine control of the people who are working in noisy environment may be useful.

Publication types

  • English Abstract

MeSH terms

  • Adult
  • Case-Control Studies
  • Female
  • Folic Acid / blood
  • Hearing Loss, Noise-Induced / blood*
  • Humans
  • Male
  • Middle Aged
  • Occupational Diseases / blood*
  • Vitamin A / blood
  • Vitamin B 12 / blood*
  • Vitamin E / blood


  • Vitamin A
  • Vitamin E
  • Folic Acid
  • Vitamin B 12