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Residential surrounding greenspace and age at menopause: A 20-year European study (ECRHS)
Univ Bergen, Dept Clin Sci, Jonas Lies Veg 65, N-5021 Bergen, Norway;Univ Bergen, Core Facil Metab, Bergen, Norway.
Ludwig Maximilians Univ Munchen, Univ Hosp, Inst & Clin Occupat Social & Environm Med, Munich, Germany;German Res Ctr Environm Hlth, Helmholtz Zentrum Munchen, Inst Epidemiol, Neuherberg, Germany.
Univ Bergen, Dept Clin Sci, Jonas Lies Veg 65, N-5021 Bergen, Norway;Univ Bergen, Core Facil Metab, Bergen, Norway.
Univ Iceland, Fac Med, Reykjavik, Iceland.
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2019 (English)In: Environment International, ISSN 0160-4120, E-ISSN 1873-6750, Vol. 132, article id UNSP 105088Article in journal (Refereed) Published
Abstract [en]

Background: Menopause is associated with a number of adverse health effects and its timing has been reported to be influenced by several lifestyle factors. Whether greenspace exposure is associated with age at menopause has not yet been investigated.

Objective: To investigate whether residential surrounding greenspace is associated with age at menopause and thus reproductive aging.

Methods: This longitudinal study was based on the 20-year follow-up of 1955 aging women from a large, population-based European cohort (ECRHS). Residential surrounding greenspace was abstracted as the average of satellite-based Normalized Difference Vegetation Index (NDVI) across a circular buffer of 300 m around the residential addresses of each participant during the course of the study. We applied mixed effects Cox models with centre as random effect, menopause as the survival object, age as time indicator and residential surrounding greenspace as time-varying predictor. All models were adjusted for smoking habit, body mass index, parity, age at menarche, ever-use of contraception and age at completed full-time education as socio-economic proxy.

Results: An increase of one interquartile range of residential surrounding greenspace was associated with a 13% lower risk of being menopausal (Hazard Ratio: 0.87, 95% Confidence Interval: 0.79–0.95). Correspondingly the predicted median age at menopause was 1.4 years older in the highest compared to the lowest NDVI quartile. Results remained stable after additional adjustment for air pollution and traffic related noise amongst others.

Conclusions: Living in greener neighbourhoods is associated with older age at menopause and might slow reproductive aging. These are novel findings with broad implications. Further studies are needed to see whether our findings can be replicated in different populations and to explore the potential mechanisms underlying this association.

 

Place, publisher, year, edition, pages
2019. Vol. 132, article id UNSP 105088
Keywords [en]
Greenspace, MenopauseN, DVI, Reproductive aging, Sex hormones
National Category
Occupational Health and Environmental Health
Identifiers
URN: urn:nbn:se:uu:diva-397650DOI: 10.1016/j.envint.2019.105088ISI: 000493552400048PubMedID: 31437647OAI: oai:DiVA.org:uu-397650DiVA, id: diva2:1374851
Funder
The Research Council of Norway, 228174EU, Horizon 2020, 633212Available from: 2019-12-03 Created: 2019-12-03 Last updated: 2019-12-03Bibliographically approved

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