Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
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alsfakia@gmail.com

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Παρασκευή 23 Νοεμβρίου 2018

Obesity, but not metabolic syndrome, as a risk factor for late-onset asthma in Japanese women

Publication date: Available online 23 November 2018

Source: Allergology International

Author(s): Yasuhiro Tomita, Yuma Fukutomi, Mari Irie, Kazuhiro Azekawa, Hiroaki Hayashi, Yosuke Kamide, Kiyoshi Sekiya, Yoichi Nakamura, Chiharu Okada, Terufumi Shimoda, Yoshinori Hasegawa, Masami Taniguchi

Abstract
Background

Several cross-sectional studies have suggested an association between obesity and asthma. However, few studies have investigated this relationship longitudinally, especially in middle-aged subjects. Although metabolic syndrome is a well-known risk factor for many non-communicable diseases, its contribution to asthma remains controversial.

Methods

From 2008, specific health checkups for metabolic syndrome have been conducted throughout Japan. To seek relationships of obesity and metabolic syndrome with late-onset asthma in Japan, we analyzed data collected from health insurance claims and specific health checkups for metabolic syndrome at three large health insurance societies. Among subjects aged 40–64 years (n = 9888), multivariate logistic regression analyses were performed to investigate the relationships of obesity and metabolic syndrome in fiscal year 2012 (from April 2012 to March 2013) with the incidence of late-onset asthma in the following two years (from April 2013 to March 2015).

Results

In women, BMI 25–29.9 kg/m2 or ≥30 kg/m2, waist circumference ≥90 cm, and waist-to-height ratio ≥0.5 were shown to be significant risk factors for asthma, with adjusted odds ratios (95% CI) of 1.92 (1.35–2.75), 2.24 (1.23–4.09), 1.89 (1.30–2.75), and 1.53 (1.15–2.03), respectively. Significance was retained even after adjustment for metabolic syndrome, and there were no significant relationships between metabolic syndrome itself and the incidence of asthma in men or women.

Conclusions

Only the obesity measures, not metabolic syndrome, were shown to be significant risk factors for the incidence of late-onset asthma but only in middle-aged Japanese women, and not in men.



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