Obesity is associated with early hip fracture risk in postmenopausal women: a 25-year follow-up.
Publication Date
2021-04Journal Title
Osteoporos Int
ISSN
0937-941X
Publisher
Springer Science and Business Media LLC
Volume
32
Issue
4
Pages
769-777
Language
en
Type
Article
This Version
VoR
Metadata
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Rikkonen, T., Sund, R., Sirola, J., Honkanen, R., Poole, K., & Kröger, H. (2021). Obesity is associated with early hip fracture risk in postmenopausal women: a 25-year follow-up.. Osteoporos Int, 32 (4), 769-777. https://doi.org/10.1007/s00198-020-05665-w
Description
Funder: Juho Vainion Säätiö; doi: http://dx.doi.org/10.13039/501100004037
Funder: Pohjois-Savon Rahasto; doi: http://dx.doi.org/10.13039/501100005432
Funder: Sigrid Juséliuksen Säätiö; doi: http://dx.doi.org/10.13039/501100006306
Abstract
Association of body mass index and hip fracture has been controversial. In this study, women with lowest and highest body weight had the highest fracture incidence. A 25-year follow-up indicated that obesity associates with early hip fracture risk and suggested increasing trend in normal-weight women at a later stage. INTRODUCTION: Obesity is a pandemic health issue. Its association with hip fracture risk remains controversial. We studied the long-term relationship of body mass index and hip fracture incidence in postmenopausal women. METHODS: The cohort of 12,715 Finnish women born in 1932-1941 was followed for 25 years, covering ages from 58 up to 83. Fractures and deaths were obtained from national registries. Women were investigated in deciles of BMI as well as in WHO weight categories (normal, overweight, or obese). The follow-up analysis was carried out in two age strata as "early" (58-70 years) and "late" (> 70 years). Body weight information was updated accordingly. Femoral neck BMD was recorded for a subsample (n = 3163). Altogether, 427 hip fractures were observed. RESULTS: A higher risk of early hip fracture was observed in obese and normal-weight compared with overweight women with hazard ratios (HRs) of 2.3 ((95% CI) 1.4-3.7) and 2.0 (1.3-3.1) while no difference was observed in late hip fracture risk between the three WHO categories (log rank p = 0.14). All-cause mortality during the follow-up was 19.3%. Compared with normal weight women, the obese women had a higher risk of death with an HR of 1.6 (1.4-1.8) and higher baseline BMD (p < 0.001). Faster bone loss was observed in the obese compared with other women (p < 0.001). CONCLUSION: Obesity associates with earlier hip fracture and higher postfracture mortality. The obese women with low BMD have clearly the highest risk of hip fracture. This combination increases hip fracture risk more than either of the factors alone. After 75 years of age, risk appears to increase more in normal weight women, but this trend is in need of further confirmation.
Keywords
Original Article, Aging, Body mass index, Bone mineral density, Follow-up study, General population, Hip fracture, Menopause, Obesity
Sponsorship
Suomalainen Tiedeakatemia (310831/2017)
Identifiers
s00198-020-05665-w, 5665
External DOI: https://doi.org/10.1007/s00198-020-05665-w
This record's URL: https://www.repository.cam.ac.uk/handle/1810/329810
Rights
Licence:
http://creativecommons.org/licenses/by-nc/4.0/
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