bariatric surgery; laparoscopic sleeve gastrectomy; dietary habits; leptin; ghrelin; dietary intake frequency

Bariatric interventions not only ensure body weight reduction, but may influence dietary habits. Aim: To assess changes in adipose hormones and dietary habits in obese patients after sleeve gastrectomy. Results: The average patient weight loss 12 months after surgery was 31.7 kg. Excess weight loss was 55.2 %. Patients reported reduced appetite, increasingly regular food intake. Plasma levels of fasting glucose, leptin and ghrelin significantly decreased; in contrast, the level of adiponectin significantly increased. Conclusions: Sleeve gastrectomy and follow-up nutritional therapy resulted in a significant body weight reduction within 1 year after surgery. An improvement of certain dietary habits in patients was registered. At 12 months after surgery, there were no statistically significant differences in decreases in ghrelin and leptin concentrations between patients without changed appetite and those reporting decreased appetite.