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Metabolism. 2001 Mar;50(3):311-8.

Lipids, apoprotein B, and associated coronary risk factors in urban and rural older Mexican populations.

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Departamento de Diabetes y Metabolismo de Lípidos, Instituto Nacional de la Nutrición Salvador Zubirán, México City, México.


The objective of this comparative cross-sectional study was to determine the prevalence of dyslipidemias and examine its association with food intake and metabolic variables in urban and rural elder Mexican populations. Three different communities (urban areas of medium and low income and a rural area) were studied. A total of 344 subjects aged 60 years and older and 273 aged 35 to 59 years were included. The evaluated parameters were personal medical data, 24-hour diet recall, and fasting plasma lipids, insulin, and glucose levels. Older subjects, especially men, living in the rural area had lower cholesterol levels (5.02 +/- 0.97 v 5.6 +/- 1.07 mmol/L; P <.05) and insulin levels (12 +/- 10 v 42 +/- 68 mU/mL) and higher high-density lipoprotein cholesterol concentrations (1.31 +/- 0.36 v 1.07 +/-0.28 mmol/L) than the elders from the urban medium-income group. Possible explanations for these differences are found in the dietary habits of the groups. Rural elders had higher amounts of fiber (20 +/- 11 v 10 +/- 6 g/d) and carbohydrate (70% +/- 0.08% v 52% +/- 0.11% of calories) and lower fat (18% +/- 0.07% v 33% +/- 0.1% of calories) in their diets. In the urban groups, low-density lipoprotein hypercholesterolemia was present in 17.8% of adult and 39.1% of elderly women (P =.00001). In conclusion, environmental factors still play a prominent role in the pathophysiology of the dyslipidemias in the elderly.

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