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Association between dairy intake and fracture in an Australian-based cohort of women: a prospective study

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posted on 01.11.2019, 00:00 authored by Hajara AslamHajara Aslam, K L Holloway-Kew, Mohammadreza MohebbiMohammadreza Mohebbi, Felice JackaFelice Jacka, Julie PascoJulie Pasco
Objective Given the inconsistent evidence on dairy consumption and risk of fracture, we assessed the association between milk/total dairy consumption and major osteoporotic fracture (MOF) in women from the Geelong Osteoporosis Study (GOS). Methods Women aged ≥50 years (n=833) were followed from baseline (1993-1997) to date of first fracture, death or 31 December 2017, whichever occurred first. Dairy consumption was assessed by self-report at baseline and the follow-up phases. MOFs (hip, forearm, clinical spine and proximal humerus) were confirmed radiologically. Multivariable-adjusted Cox proportional hazard models were used to determine associations between milk/total dairy (milk, cheese, yoghurt, ice cream) consumption and MOFs. Cross-sectional associations between milk/total dairy consumption and serum high-sensitivity C reactive protein (hsCRP), C-terminal telopeptide (CTx) and procollagen type 1 N-terminal propeptide (P1NP) at baseline were investigated using multivariable linear regression. Results During follow-up (11 507 person-years), 206 women had an MOF. Consuming >500 mL/d of milk was not significantly associated with increased HR for MOF. Non-milk (1.56; 95% CI 0.99 to 2.46) drinkers and consumption of ≥800 g/d total dairy (1.70; 95% CI 0.99 to 2.93) had marginally higher HR for MOF compared with consuming <250 mL/d of milk and 200-399 g/d of total dairy, respectively. Milk consumption was inversely associated with serum hsCRP and CTx, but total dairy consumption was not associated with these serum markers. Conclusion Higher milk consumption did not increase the risk for MOF in older women. However, a trend for increased MOF was detected in zero milk and higher total dairy consuming women.

History

Journal

BMJ Open

Volume

9

Issue

11

Article number

e031594

Pagination

1 - 11

Publisher

BMJ

Location

London, Eng.

eISSN

2044-6055

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2019, Author(s) (or their employer(s))