科研之友
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摘要
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 beta-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 beta-carotene, vitamin C, and magnesium were associated with lower (better) PTAs at both speech and high frequencies. 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 (-14.82%; 95% CI: -20.50% to 8.74% for beta-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 beta-carotene/low magnesium (-4.98%) and low beta-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.
- 出版日期2014-1
- 单位东北大学
