, Volume 17, Issue 3, pp 426-432
Date: 31 Dec 2005

Features of the metabolic syndrome and the risk of non-vertebral fractures: The Tromsø study

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Abstract

Introduction

We wanted to examine whether the features of the metabolic syndrome carried an increased risk of non-vertebral fracture.

Methods

This is a population-based, 6-year follow-up of 27,159 subjects from the municipality of Tromsø, followed from 1994 until 2001. Age range was 25–98 years. Non-fasting serum levels of high-density lipoprotein (HDL), triglycerides and glucose, blood pressure (BP), weight and height were measured at baseline. All non-vertebral fractures were registered by computerised search in radiographic archives.

Results

A total of 1,249 non-vertebral fractures were registered. Increasing number of metabolic syndrome features was associated with significantly reduced fracture risk in both men and women, p= 0.004 and p<0.0001, respectively. High BP was protective against fracture in men [relative risk (RR) 0.89; 95% confidence interval (CI) 0.8–0.99)] while increased body mass index (BMI) was protective in women (RR 0.91; 95% CI 0.84–0.98). Increasing non-fasting serum levels of HDL increased fracture risk in women (RR 1.12; 95% CI 1.05–1.21). BMI modified the effect of HDL in men. Accordingly, high HDL increased fracture risk in men with high BMI (RR 1.51; 95% CI 1.2–1.9).

Conclusions

Increasing burden of metabolic syndrome features protects against non-vertebral fractures. Reduced non-vertebral fracture risk was associated with high BP in men and increased body mass in women. Lower non-fasting serum levels of HDL protect against fractures in women and obese men.

An erratum to this article can be found at http://dx.doi.org/10.1007/s00198-009-0847-8.