Résumé
OBJECTIVE: This study aimed to evaluate long-term weight loss in overweight hypertensive patients receiving dietary counseling. METHODS: Longitudinal study included overweight hypertensive patients who had an initial individual consultation with a nutritionist between January 2002 and December 2005 and were followed for four years in a hypertension clinic. Patients who had at least four consultations during the follow-up period were included in the dietary counseling group. Those who scheduled their first consultation but missed that appointment or had fewer than four consultations during the follow-up period were allocated to the control group. Target Energy intake was calculated at 20-25 kcal/kg actual body weight/day. RESULTS: The study included 102 patients aged 55 + 1 years old (58 in the dietary counseling group). As compared with the control group, patients in the dietary counseling group showed a significantly greater reduction in body weight (-3.6 + 0.8 vs. 0.8 + 0.7 kg), which remained significant after controlling for age, gender, baseline body mass index, and the use of different antihypertensive and antidiabetic drugs. Weight loss between 5.0 percent and 9.9 percent was observed in a significantly higher percentage of patients in the dietary counseling group (28 percent vs. 11 percent). A weight loss of at least 10 percent was only observed in dietary counseling group patients, who had a significantly lower odds ratio for increasing the number and/or dosage of antihypertensive agents, even after controlling for age, gender, and baseline body mass index. CONCLUSIONS: Dietary counseling may be associated with long-term weight loss in overweight hypertensive patients.