Very low-calorie diet in candidates for bariatric surgery: change in body composition during rapid weight loss.

Objective: To analyze the changes in the body composition of morbidly obese patients induced by a very low-calorie diet.

Methods: We evaluated 120 patients selected from a university hospital. Body composition was assessed before and after the diet provided during hospitalization, and changes in weight, body mass index, and neck, waist and hip circumferences were analyzed.

Obese patients lose weight independently of nutritional follow-up after bariatric surgery.

Objective: to examine the association between preoperative body weight, adherence to postsurgical nutritional follow-up, length of postoperative period, and weight loss during the first 18 months among adults who have undergone bariatric surgery.

Methods: a retrospective cohort study was conducted on 241 consecutive patients who underwent open Roux-en-Y gastric bypass (RYGBP) from January 2006 to December 2008, in a teaching hospital in São Paulo (Brazil). Data were collected through hospital records review and the variables analyzed included sex, age, immediate preoperative weight, adherence to postsurgical nutritional visits and length of postoperative period.

Dietary intake of female bariatric patients after anti-obesity gastroplasty.

Purpose: Roux-en-Y gastric bypass is a popular and successful operation for the treatment of morbid obesity. However, it greatly restricts ingestion and moderately interferes with absorption of food, thus potentially paving the way for undernutrition, especially during the first year before patients adapt to the new condition. Aiming to document actual dietary intake during this period, a prospective observational study was performed.