Ontology highlight
ABSTRACT: Background
The protective effects of antioxidant vitamins on hearing loss are well established in animal studies but in few human studies. Recent animal studies suggest that magnesium intake along with antioxidants may act in synergy to prevent hearing loss.Objective
We examined associations between intake of antioxidant vitamins (daily ?-carotene and vitamins C and E) and magnesium and hearing thresholds and explored their joint effects in US adults.Design
We analyzed cross-sectional data from 2592 participants aged 20-69 y from NHANES 2001-2004. Hearing thresholds as pure tone averages (PTAs) at speech (0.5, 1, 2, and 4 kHz) and high frequencies (3, 4, and 6 kHz) were computed.Results
When examined individually, modeled as quartiles, and after adjustment for potential confounders, higher intakes of ?-carotene, vitamin C, and magnesium were associated with lower (better) PTAs at both speech and high frequencies. High intakes of ?-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 (-14.82%; 95% CI: -20.50% to -8.74% for ?-carotene + magnesium and -10.72%; 95% CI: -16.57% to -4.45% for vitamin C + magnesium). The estimated joint effects were borderline significantly larger than the sums of the individual effects [high ?-carotene/low magnesium (-4.98%) and low ?-carotene/high magnesium (-0.80%), P-interaction = 0.08; high vitamin C/low magnesium (-1.33%) and low vitamin C/high magnesium (2.13%), P-interaction = 0.09].Conclusion
Dietary intakes of antioxidants and magnesium are associated with lower risks of hearing loss.
SUBMITTER: Choi YH
PROVIDER: S-EPMC4441318 | biostudies-literature | 2014 Jan
REPOSITORIES: biostudies-literature
Choi Yoon-Hyeong YH Miller Josef M JM Tucker Katherine L KL Hu Howard H Park Sung Kyun SK
The American journal of clinical nutrition 20131106 1
<h4>Background</h4>The protective effects of antioxidant vitamins on hearing loss are well established in animal studies but in few human studies. Recent animal studies suggest that magnesium intake along with antioxidants may act in synergy to prevent hearing loss.<h4>Objective</h4>We examined associations between intake of antioxidant vitamins (daily β-carotene and vitamins C and E) and magnesium and hearing thresholds and explored their joint effects in US adults.<h4>Design</h4>We analyzed cr ...[more]