Dietary networks identified by Gaussian graphical model and general and abdominal obesity in adults

Nutrition Journal

Kurosh Djafarian¹  Nasim Janbozorgi²  Sakineh Shab-Bidar²  Mir Saeed Yekaninejad³  Ahmad Jayedi⁴ 

[1] Department of Clinical Nutrition, School of Nutritional Science and Dietetics, Tehran University of Medical Sciences;Department of Community Nutrition, School of Nutritional Science and Dietetics, Tehran University of Medical Sciences;Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences;Food Safety Research Center (salt), Semnan University of Medical Sciences;

关键词: Abdominal obesity;    Dietary network;    Dietary pattern;    Diet quality;    Obesity;   

DOI  :  10.1186/s12937-021-00746-w

来源: DOAJ

【 摘 要 】

Abstract Background Gaussian graphical model (GGM) has been introduced as a new approach to identify patterns of dietary intake. We aimed to investigate the link between dietary networks derived through GGM and obesity in Iranian adults. Method A cross-sectional study was conducted on 850 men and women (age range: 20–59 years) who attended the local health centers in Tehran. Dietary intake was evaluated by using a validated food frequency questionnaire. GGM was applied to identify dietary networks. The odds ratios (ORs) and 95% confidence intervals (CIs) of general and abdominal adiposity across tertiles of dietary network scores were estimated using logistic regression analysis controlling for age, sex, physical activity, smoking status, marital status, education, energy intake and menopausal status. Results GGM identified three dietary networks, where 30 foods were grouped into six communities. The identified networks were healthy, unhealthy and saturated fats networks, wherein cooked vegetables, processed meat and butter were, respectively, central to the networks. Being in the top tertile of saturated fats network score was associated with a higher likelihood of central obesity by waist-to-hip ratio (OR: 1.56, 95%CI: 1.08, 2.25; P for trend: 0.01). There was also a marginally significant positive association between higher unhealthy network score and odds of central obesity by waist circumference (OR: 1.37, 95%CI: 0.94, 2.37; P for trend: 0.09). Healthy network was not associated with central adiposity. There was no association between dietary network scores and general obesity. Conclusions Unhealthy and saturated fat dietary networks were associated with abdominal adiposity in adults. GGM-derived dietary networks represent dietary patterns and can be used to investigate diet-disease associations.

【 授权许可】

Unknown