DOES BMI AFFECT CHOLESTEROL, SUGAR, AND BLOOD PRESSURE IN GENERAL POPULATION?
Abstract
Background: Higher BMI in child hood is also associated with an increase risk for coronary heartdisease in adulthood. Impaired glucose tolerance is highly prevalent in children and adolescents withsevere obesity. Positive correlations between BMI and glucose, lipids and BP have previously beenreported. The objective of this study was to find the correlation of BMI with cholesterol and sugar levelin general population. Methods: This study was a part of ‘Peshawar Heart Study’, performed atCardiology Department, Lady Reading Hospital, Peshawar in 2008–2009. Individuals with differentages, gender, professions, socioeconomic class were randomly selected from general population.Random blood sugar and cholesterol was measured with strip method. Height and weight of eachindividual was recorded and BMI calculated. All individuals were asked about any current medicalillness and whether they were performing any exercise or not. Using SPSS-13, descriptive statisticswere used for frequencies. Bivariate correlations were used for measuring correlation between BMI,sugar and cholesterol. Partial correlations were used to factor out the effect of other variables. Results:A total of 2,270 individuals, 1,798 (79.2%) male and 472 (20.8%) female were examined. Mean agewas 38.47±12.66. Mean BMI was 26.38±4.97. Mean RBS was 113.7±47.145. Mean cholesterol was168.47±28.23. Exercise was performed by 929 (40.90%) individuals. Diabetes was present in 113(5.0%) and history of high cholesterol in 25 (1.1%) persons. When bivariate correlation analysis weredone systolic BP, diastolic BP, RBS and cholesterol had positive correlation with BMI [correlationcoefficient of 0.317 (p<0.000), 0.319(p<0.000), 0.125 (p<0.000) and 0.205 (p<0.000) respectively].These variables also showed a positive correlation among themselves. After factoring out the effects ofage, exercise, gender and current medical status on the above correlations, the correlation of RBS andcholesterol with BMI decreased to 0.025 (p=0.232) and 0.135 (p<0.000) respectively and betweensugar and cholesterol decreased to 0.018 (p=0.401). Conclusion: In general population BMI ispositively correlated with RBS and cholesterol. With the effect of age, sex, exercise and currentmedical status, this correlation is reduced.Keywords: Body Mass Index (BMI), RBS, Cholesterol, Obese, ObesityReferences
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