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Association of Iron Deficiency Anemia With Hearing Loss in US Adults.

ABSTRACT: Importance:Hearing loss in the US adult population is linked to hospitalization, poorer self-reported health, hypertension, diabetes, and tobacco use. Because iron deficiency anemia (IDA) is a common and easily correctable condition, further understanding of the association between IDA and all types of hearing loss in a population of US adults may help to open new possibilities for early identification and appropriate treatment. Objective:To evaluate the association between sensorineural hearing loss (SNHL) and conductive hearing loss and IDA in adults aged 21 to 90 years in the United States. Design, Setting, and Participants:The prevalence of IDA and hearing loss (International Classification of Diseases, Ninth Revision codes 389.1 [SNHL], 389.0 [conductive hearing loss], and 389 [combined hearing loss]) was identified in this retrospective cohort study at the Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania. Iron deficiency anemia was determined by low hemoglobin and ferritin levels for age and sex in 305?339 adults aged 21 to 90 years. Associations between hearing loss and IDA were evaluated using ?2 testing, and logistic regression was used to model the risk of hearing loss among those with IDA. The study was conducted from January 1, 2011, to October 1, 2015. Main Outcomes and Measures:Hearing loss. Results:Of 305?339 patients in the study population, 132 551 were men (43.4%); mean (SD) age was 50.1 (18.5) years. There was a 1.6% (n?=?4807) prevalence of combined hearing loss and 0.7% (n?=?2274) prevalence of IDA. Both SNHL (present in 26 of 2274 individuals [1.1%] with IDA; P?=?.005) and combined hearing loss (present in 77 [3.4%]; P?

SUBMITTER: Schieffer KM

PROVIDER: S-EPMC5787694 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature

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Association of Iron Deficiency Anemia With Hearing Loss in US Adults.

Schieffer Kathleen M KM Chuang Cynthia H CH Connor James J Pawelczyk James A JA Sekhar Deepa L DL

JAMA otolaryngology-- head & neck surgery 20170401 4

<h4>Importance</h4>Hearing loss in the US adult population is linked to hospitalization, poorer self-reported health, hypertension, diabetes, and tobacco use. Because iron deficiency anemia (IDA) is a common and easily correctable condition, further understanding of the association between IDA and all types of hearing loss in a population of US adults may help to open new possibilities for early identification and appropriate treatment.<h4>Objective</h4>To evaluate the association between sensor ...[more]

PMID: 28033450

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Project description:BackgroundPrevious trials of prenatal iron supplementation had limited measures of maternal or neonatal iron status.ObjectiveThe purpose was to assess effects of prenatal iron-folate supplementation on maternal and neonatal iron status.MethodsEnrollment occurred June 2009 through December 2011 in Hebei, China. Women with uncomplicated singleton pregnancies at ≤20 wk gestation, aged ≥18 y, and with hemoglobin ≥100 g/L were randomly assigned 1:1 to receive daily iron (300 mg ferrous sulfate) or placebo + 0.40 mg folate from enrollment to birth. Iron status was assessed in maternal venous blood (at enrollment and at or near term) and cord blood. Primary outcomes were as follows: 1) maternal iron deficiency (ID) defined in 2 ways as serum ferritin (SF) <15 μg/L and body iron (BI) <0 mg/kg; 2) maternal ID anemia [ID + anemia (IDA); hemoglobin <110 g/L]; and 3) neonatal ID (cord blood ferritin <75 μg/L or zinc protoporphyrin/heme >118 μmol/mol).ResultsA total of 2371 women were randomly assigned, with outcomes for 1632 women or neonates (809 placebo/folate, 823 iron/folate; 1579 mother-newborn pairs, 37 mothers, 16 neonates). Most infants (97%) were born at term. At or near term, maternal hemoglobin was significantly higher (+5.56 g/L) for iron vs. placebo groups. Anemia risk was reduced (RR: 0.53; 95% CI: 0.43, 0.66), as were risks of ID (RR: 0.74; 95% CI: 0.69, 0.79 by SF; RR: 0.65; 95% CI: 0.59, 0.71 by BI) and IDA (RR: 0.49; 95% CI: 0.38, 0.62 by SF; RR: 0.51; 95% CI: 0.40, 0.65 by BI). Most women still had ID (66.8% by SF, 54.7% by BI). Adverse effects, all minor, were similar by group. There were no differences in cord blood iron measures; >45% of neonates in each group had ID. However, dose-response analyses showed higher cord SF with more maternal iron capsules reported being consumed (β per 10 capsules = 2.60, P < 0.05).ConclusionsPrenatal iron supplementation reduced anemia, ID, and IDA in pregnant women in rural China, but most women and >45% of neonates had ID, regardless of supplementation. This trial was registered at clinicaltrials.gov as NCT02221752.

Dataset Information

Association of Iron Deficiency Anemia With Hearing Loss in US Adults.

Publications

Association of Iron Deficiency Anemia With Hearing Loss in US Adults.

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