This study provides evidence in free living men that there is an association between dietary fiber intake and favorable lipid status and that lifestyle defined by socioeconomic status, physical activity and the quality of the dietary fat intake can play an important role. Public health nutrition advice and policy should continue to emphasize the importance of these factors.
To investigate whether the high prevalence of coronary heart disease (CHD) and type II diabetes prevalent in Northern Mexico could be related to the presence at a young age of biomarkers for chronic disease, 25 boys and 29 girls (8-12 y old) from a low socioeconomic group were recruited. Plasma lipids, LDL phenotype, apolipoproteins (apos), glucose, and insulin were evaluated. Analysis of 3-d dietary records indicated the typical intake of this region to be high in total fat (37-43% energy) and saturated fat (11-13% energy). Boys and girls had an average of 6623 +/- 2892 and 6112 +/- 2793 steps/d, respectively, as measured by a pedometer, suggesting a low level of activity. Plasma total and LDL cholesterol (LDL-C) were within the 50th percentile. In contrast, the study population was characterized by having high triglycerides (TG) (95th percentile, 1.25 +/- 0.37 mmol/L in boys and 1.19 +/- 0.38 mmol/L in girls). HDL cholesterol (HDL-C) concentrations were low (25th percentile), 1.22 +/- 0.20 mmol/L in girls and 1.29 +/- 0.20 mmol/L in boys. There was also a high prevalence of the small dense LDL phenotype B (69%), which is associated with increased risk for CHD. These results suggest that the population of children studied may have 2 different components of risk, one being the high-fat diet, which could be associated with the elevated levels of plasma LDL-C present in the adult population. A second component, related to the insulin resistance syndrome, may be principally genetic and associated with the high TG, low HDL, and LDL phenotype B observed in these Mexican children.
At 1 year postpartum, adolescent mothers exhibited BMD similar to those of nulliparous adolescents. This result is likely attributable to the breastfeeding practices adopted by mothers during late adolescence.
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