Dietary intake of polychlorinated dibenzo-p-dioxins and furans, adiposity and obesity status.

Identifier:  imarina:9295177

Handle: https://hdl.handle.net/20.500.11797/imarina9295177

Authors:  Khoury, Nadine; Angeles Martinez, Maria; Paz-Graniel, Indira; Angel Martinez-Gonzalez, Miguel; Corella, Dolores; Castaner, Olga; Alfredo Martinez, J; Alonso-Gomez, Angel M; Warnberg, Julia; Vioque, Jesus; Romaguera, Dora; Lopez-Miranda, Jose; Estruch, Ramon; Tinahones, Francisco J; Lapetra, Jose; Lluis Serra-Majem, J; Bueno-Cavanillas, Aurora; Tur, Josep A; Cinza Sanjurjo, Sergio; Pinto, Xavier; Juan Gaforio, Jose; Matia-Martin, Pilar; Vidal, Josep; Vazquez, Clotilde; Daimiel, Lidia; Ros, Emilio; Sayon-Orea, Carmen; Sorli, Jose V; Perez-Vega, Karla-Alejandra; Garcia-Rios, Antonio; Gomez Bellvert, Nuria; Gomez-Gracia, Enrique; Zulet, M A; Chaplin, Alice; Casas, Rosa; Salcedo-Bellido, Inmaculada; Tojal-Sierra, Lucas; Bernal-Lopez, Maria-Rosa; Vazquez-Ruiz, Zenaida; Asensio, Eva M; Goday, Albert; Pena-Orihuela, Patricia J; Signes-Pastor, Antonio J; Garcia-Arellano, Ana; Fito, Montse; Babio, Nancy; Salas-Salvado, Jordi

Abstract:
Introduction: The principal source of exposure to Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzo-p-furans (PCDD/Fs) in humans comes from food intake. PCDD/Fs, are a family of potential endocrine disruptors and have been associated with different chronic diseases such as diabetes and hypertension. However, studies assessing the relationship between dietary exposure to PCDD/Fs and adiposity or obesity status in a middle-aged population are limited. Objective: To assess cross-sectionally and longitudinally the associations between estimated dietary intake (DI) of PCDD/Fs and body mass index (BMI), waist circumference, and the prevalence/incidence of obesity and abdominal obesity in a middle-aged population. Methods: In 5899 participants aged 55–75 years (48% women) living with overweight/obesity from the PREDIMED-plus cohort, PCDD/Fs DI was estimated using a 143-item validated food-frequency questionnaire, and the levels of food PCDD/F expressed as Toxic Equivalents (TEQ). Consequently, cross-sectional and prospective associations between baseline PCDD/Fs DI (in pgTEQ/week) and adiposity or obesity status were assessed at baseline and after 1-year follow-up using multivariable cox, logistic or linear regression models. Results: Compared to participants in the first PCDD/F DI tertile, those in the highest tertile presented a higher BMI (β-coefficient [confidence interval]) (0.43kg/m2 [0.22; 0.64]; P-trend <0.001), a higher waist circumference (1.11 cm [0.55; 1.66]; P-trend <0.001), and a higher prevalence of obesity and abdominal obesity (1.05 [1.01; 1.09] and 1.02 [1.00; 1.03]; P-trend = 0.09 and 0.027, respectively). In the prospective analysis, participants in the top PCDD/F DI baseline tertile showed an increase in waist circumference compared with those in the first tertile after 1-year of follow-up (β-coefficient 0.37 cm [0.06; 0.70]; P-trend = 0.015). Conclusion: Higher DI of PCDD/Fs was positively associated with adiposity parameters and obesity status at baseline and with changes in waist circumference after 1-year of follow-up in subjects living with overweight/obesity. Further large prospective studies using a different population with longer follow-up periods are warranted in the future to strengthen our results.