Abstract

ORTIZ-HERNANDEZ, Luis; RODRIGUEZ-MAGALLANES, Magdalena  and  MELGAR-QUINONEZ, Hugo. Obesity, eating behavior, and food insecurity among adolescents in Mexico City. Bol. Med. Hosp. Infant. Mex. [online]. 2012, vol.69, n.6, pp.431-441. ISSN 1665-1146.

Background. Food insecurity is presented when there is a limited availability of food that is nutritionally adequate. Food disinhibition refers to excessive eating in the absence of hunger. We analyzed the relationship among food insecurity, dietary disinhibition, food consumption and obesity in adolescents of Mexico City. Methods. A cross-sectional survey was carried out with a convenience sample (n = 543) of adolescents in Mexico City. Food insecurity was the independent variable and was assessed through the U.S. Household Food-Security/Hunger Survey Module. Food consumption, dietary disinhibition (assessed through an ad hoc inventory), and nutritional status (overweight using body mass index, obesity through triceps and subscapular skinfolds, abdominal obesity by waist circumference) were the dependent variables. Logistic regression models were estimated to assess the existence of associations. Results. Adolescents who experienced food insecurity had a higher probability of reporting an indicator of dietary disinhibition (hunger due to stimuli), higher intake of animal food and higher rate of abdominal obesity. In the logistic regression models it was observed that the higher probability of abdominal obesity among adolescents with food insecurity without hunger was partially due to another indicator of dietary disinhibition (fast eating). Conclusions. In this sample of adolescents, food insecurity was related to higher probability of abdominal obesity. More studies are necessary to explore this problem in depth and confirm the possible mediating role ofdietary disinhibition.

Keywords : food insecurity; hunger; obesity; overweight; food consumption; disinhibition.

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