Cited by 58Breastfeeding Practices and InfluencesCancer Risks and FactorsMenopause: Health Impacts and Treatments

A prospective population-based cohort study of lactation and cardiovascular disease mortality: the HUNT study

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Natland Fagerhaug, Tone, Forsmo, Siri, Jacobsen, Geir Wenberg, Midthjell, Kristian, Andersen, Lene Frost, Ivar Lund Nilsen, Tom·2013·BMC Public Health

Abstract

BACKGROUND: Recent studies suggest that lactation has long-term effects on risk for cardiovascular disease in women, but the effects on cardiovascular mortality are less well known. METHOD: In a Norwegian population-based prospective cohort study, we studied the association of lifetime duration of lactation with cardiovascular mortality in 21,889 women aged 30 to 85 years who attended the second Nord-Trøndelag Health Survey (HUNT2) in 1995-1997. The cohort was followed for mortality through 2010 by a linkage with the Cause of Death Registry. Adjusted hazard ratios (HR) for death from all causes and cardiovascular disease were calculated using Cox regression. RESULTS: During follow-up, 1,246 women died from cardiovascular disease. Parous women younger than 65 years who had never lactated had a higher cardiovascular mortality than the reference group of women who had lactated 24 months or more (HR 2.77, 95% confidence interval [CI]: 1.28, 5.99). There was some evidence of a U-shaped association, where women who reported lactating 7-12 months had a HR of 0.55 (95% CI: 0.27, 1.09). No clear associations were observed among women 65 years or older. CONCLUSIONS: Excess cardiovascular mortality rates were observed among parous women younger than 65 years who had never lactated. These findings support the hypothesis that lactation may have long-term influences on maternal cardiovascular health.

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Authors
Natland Fagerhaug, T., Forsmo, S., Jacobsen, G. W., Midthjell, K., Andersen, L. F., & Ivar Lund Nilsen, T.
Affiliations
  • Norwegian University of Science and Technology (NO)
  • University of Oslo (NO)
Venue
BMC Public Health
Published
2013-11-13
Volume
13
Issue
1
Pages
1070-1070
ISSN
1471-2458 (ISSN-L)
OpenAlex
W2050882334
Cited by
58
References
60
Citations by year
2025: 5 · 2024: 3 · 2023: 4 · 2022: 6 · 2021: 5 · 2020: 5 · 2019: 10 · 2018: 3 · 2017: 2 · 2016: 5 · 2015: 6 · 2014: 3 · 2013: 1
FWCI
3.65
Type
journal article
Language
en
Open access
Locations
  • BMC Public Health (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • BIBSYS Brage (BIBSYS (Norway)) (acceptedVersion, cc-by)
  • NORA - Norwegian Open Research Archives (submittedVersion, cc-by)
Funders
  • Norges Teknisk-Naturvitenskapelige Universitet
  • Helse Midt-Norge
  • Norwegian Institute of Public Health
Topics
  • Health Sciences › Medicine › Epidemiology › Breastfeeding Practices and Influences
  • Health Sciences › Medicine › Oncology › Cancer Risks and Factors
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Menopause: Health Impacts and Treatments
Keywords
lactation, cardiovascular mortality, cardiovascular disease, maternal cardiovascular health, parity, women's health, U-shaped relationship
MeSH terms
Adult, Aged, Aged, 80 and over, Cardiovascular Diseases, Female, Health Surveys, Humans, Lactation, Middle Aged, Norway, Parity, Prospective Studies, Surveys and Questionnaires, Risk Factors, Proportional Hazards Models

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