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American Journal of Clinical Nutrition, Vol 34, 527-538, Copyright © 1981 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Blood pressure of Qash'qai pastoral nomads in Iran in relation to culture, diet, and body form

LB Page, DE Vandevert, K Nader, NK Lubin and JR Page

Blood pressure, diet, urinary electrolyte excretion, and body form were studied in 264 traditional nomadic herdsmen of the Qash'qai tribe, southern Iran. The population sample included male and female members over 14 yr of age at six winter campsites. Interviews established biological age, any experience of nonnomadic living, and 24-h dietary recall. Height, weight, triceps skinfolds, and blood pressure were measured. Overnight urine samples were analyzed for sodium, potassium, and creatinine. Samples of dietary staples were analyzed for selected nutrients and electrolyte content. Urinary sodium excretion averaged 186 mEq/24 h in males, and 141 mEq/24 h in females. Urinary Na/K ratios were 3.64 and 3.24 in males and females, respectively. Systolic, diastolic, and mean blood pressure in both males and females increased significantly with age. Blood pressure greater than or equal to 140/90 was found in 12% of males and 18% of females age 30 yr or over. Body weight showed no tendency to increase with age in either sex. Systolic and mean blood pressure correlated with urinary sodium excretion in males and with urinary Na/K ratio in females. From cultural observations, the population sample was considered to be at a low level of acculturation. The data suggest that blood pressure trends in this population are related to habitual dietary electrolyte intake.


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