Abstract and Keywords
Weight and height are critical indicators of short- and long-term human nutrition and health. This chapter reviews secular trends of weight, height, and body mass index (BMI) from studies that relied on primary data of living adults in small-scale, native populations in rural areas of developing nations. Most studies reviewed found trends of increases in weight and BMI over an average study period of 20 years. Women gained an average of 8.8 kg and 3.1 kg/m2, and men gained an average of 5.1 kg and 2.1 kg/m2 over this time span. Additionally, 10 of 13 native populations reviewed had a recent overweight and obesity prevalence of at least 10 percentage points lower than the national averages for men and women combined. In contrast to weight, 12 out of 21 studies found no change (n = 8) or a decline (n = 4) in secular trends of height.
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