[Is smoking history a risk factor of arterial hypertension in men?]. / Le tabagisme ancien est-il un facteur de risque d'HTA chez l'homme?

ABSTRACT

Former smokers exhibit decreased cardiovascular risk as compared to smokers who continue to smoke. However, smoking discontinuation results in weight gain which may be important and influence arterial pressure. From January 1st to June 30th, 1998, 12,417 volunteers (aged 20 to 69) were examined at the "Institut régional pour la santé" (IRSA, Regional Institute for Health), a group of 9 social medical centres in Western and Central France. The subjects were screened for a routine medical and biological check-up provided by their medical insurance. All of the subjects were interviewed by a trained nurse who completed a standardised questionnaire regarding personal medical history, current treatments and lifestyle behaviours (especially alcohol and smoking habits). A physician recorded clinical parameters including age, weight, height, systolic and diastolic arterial pressure. Body mass index (BMI) was calculated. Non smokers and former smokers represented 40.0% and 23.8% of the population respectively. The prevalence of a BMI 27.0 kg/m2 or greater was higher in former smokers than non smokers and current smokers. Systolic and diastolic arterial pressure in former smokers exceeded those of current smokers and non smokers by 4.2/1.1 mmHg and 2.8/1.6 mmHg respectively. Using logistic regression analysis, the relative risk of hypertension in former smokers was 1.24 (CI 95% 1.10-1.39, p < 0.001) and 1.13 (0.995-1.29, p = 0.055) as compared to non smokers and current smokers, after adjustment for age and alcohol intake. Differences became non significant when BMI was entered in the model. The results of the present study suggest that former smoking status is associated with a higher prevalence of overweight which may cause a higher prevalence of hypertension.