International Journal of Obesity

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Putative contributors to the secular increase in obesity: exploring the roads less traveled

S W Keith, D T Redden, P T Katzmarzyk, M M Boggiano, E C Hanlon, R M Benca, D Ruden, A Pietrobelli, J L Barger, K R Fontaine, C Wang, L J Aronne, S M Wright, M Baskin, N V Dhurandhar, M C Lijoi, C M Grilo, M DeLuca, A O Westfall and D B Allison

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Figure 1.

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Secular changes in a number of key indicators of factors that may be related to the increase in obesity. These indicators include the following: mean age of US mothers at first birth;77 antidepressant prescribing in the UK;115 prevalence of AC – the percentage of US households equipped with air-conditioning;49 UK average internal home temperature – average internal home temperature;46 PDBE concentration—the concentration of polybrominated diphenyl ethers in the breast milk of Swedish women from 1972 to 1978;39 proportion of US adult population that is Hispanic and/or between 35 and 55 years of age;71 time spent awake;27, 28 non-smoker prevalence (Data compiled by the Centers for Disease Control and Prevention, Office on Smoking and Health, from the Current Population Survey, 1955, and the National Health Interview Surveys, 1965–1994, unpublished);50, 53 adult obesity prevalence, US adults only, BMI greater than or equal to30 kg/m2 indicates obesity.1

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