Cited by 1,284Iron Metabolism and DisordersAcute Myocardial Infarction ResearchCardiovascular Health and Risk Factors

High stored iron levels are associated with excess risk of myocardial infarction in eastern Finnish men

Salonen, J T, Nyyssönen, K, Korpela, H, Tuomilehto, J, Seppänen, R, Salonen, R·1992·Circulation

Abstract

BACKGROUND: Iron can induce lipid peroxidation in vitro and in vivo in humans and has promoted ischemic myocardial injury in experimental animals. We tested the hypothesis that high serum ferritin concentration and high dietary iron intake are associated with an excess risk of acute myocardial infarction. METHODS AND RESULTS: Randomly selected men (n = 1,931), aged 42, 48, 54, or 60 years, who had no symptomatic coronary heart disease at entry, were examined in the Kuopio Ischaemic Heart Disease Risk Factor Study (KIHD) in Eastern Finland between 1984 and 1989. Fifty-one of these men experienced an acute myocardial infarction during an average follow-up of 3 years. On the basis of a Cox proportional hazards model adjusting for age, examination year, cigarette pack-years, ischemic ECG in exercise test, maximal oxygen uptake, systolic blood pressure, blood glucose, serum copper, blood leukocyte count, and serum high density lipoprotein cholesterol, apolipoprotein B, and triglyceride concentrations, men with serum ferritin greater than or equal to 200 micrograms/l had a 2.2-fold (95% CI, 1.2-4.0; p less than 0.01) risk factor-adjusted risk of acute myocardial infarction compared with men with a lower serum ferritin. An elevated serum ferritin was a strong risk factor for acute myocardial infarction in all multivariate models. This association was stronger in men with serum low density lipoprotein cholesterol concentration of 5.0 mmol/l (193 mg/dl) or more than in others. Also, dietary iron intake had a significant association with the disease risk in a Cox model with the same covariates. CONCLUSIONS: Our data suggest that a high stored iron level, as assessed by elevated serum ferritin concentration, is a risk factor for coronary heart disease.

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Crossref · 10.1161/01.cir.86.3.803

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Authors
Salonen, J. T., Nyyssönen, K., Korpela, H., Tuomilehto, J., Seppänen, R., & Salonen, R.
Affiliations
University of Eastern Finland (FI)
Venue
Circulation
Published
1992-09
Volume
86
Issue
3
Pages
803-811
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W2065303599
Cited by
1,284
References
38
Citations by year
2026: 8 · 2025: 15 · 2024: 16 · 2023: 17 · 2022: 43 · 2021: 32 · 2020: 27 · 2019: 33 · 2018: 36 · 2017: 42 · 2016: 47 · 2015: 35 · 2014: 38 · 2013: 40 · 2012: 48
FWCI
34.96
Type
journal article
Language
en
Open access
closed
Locations
  • Circulation (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Acute Myocardial Infarction Research
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Risk Factors
Keywords
serum ferritin, stored iron, acute myocardial infarction, coronary heart disease risk, iron intake, lipid peroxidation, LDL cholesterol, men, Eastern Finland
MeSH terms
Adult, Aging, Diet, Dose-Response Relationship, Drug, Ferritins, Finland, Hemoglobins, Humans, Iron, Cholesterol, LDL, Male, Middle Aged, Myocardial Infarction, Risk Factors, Smoking, Proportional Hazards Models

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