Active clinical trials for "Obesity"

People who are overweight and/or obese are at risk of insulin resistance and type 2 diabetes. However, research has shown that some overweight and/or obese individuals remain insulin-sensitive and metabolically healthy despite their unhealthy body weight. The investigators hypothesise that overweight and/or obese people who were deemed insulin-sensitive in previous studies will maintain their insulin sensitivity and metabolic health over time. The investigators also hypothesise that the preservation of insulin sensitivity will be accompanied by key metabolic health markers.

Patients with BMI over 40 or with BMI over 35 and comorbidities are offered SADI-S with a variable limb length between 250 cm and 300 cm or gastric bypass. Results on weight loss, comorbidities resolution, complications, re-operations, need of supplements are registered.

The purpose of this project is to create a database to collect information about the NEW Keiki Program. The information collected for this project will be used to evaluate the program. The NEW Keiki program promotes healthy lifestyles and behavior changes.

Sleev gastrectomy is a procedure performed for permanent treatment of obesity. For the procedure, cutting of the stomach is performed with differents long of stapplers. The aim of the study is to determine wich long of stappler is applicable in any stage of the procedure ans the variation expected.

The purpose of this research study is to determine how bariatric surgery affects physical activity and nutrient intake. This research study is being done because the investigators want to determine better recommendations to provide to bariatric surgery patients.

To examine pancreatic islet function and incretin function during intravenous and oral stimulation >2 years after gastric bypass surgery in patients with normal glucose tolerance. We hypothesize that islet cell and incretin function is enhanced in response to oral, but not intravenous, stimulation - i.e. incretin released from the gut in response to oral stimulation play a key role for the enhanced islet function after gastric bypass surgery.

The investigators are concerned about anesthetizing obese children in outpatient locations in case they need prolonged stay, increased respiratory interventions, or need for post-operative narcotics. The investigators will be using a screening guideline to help us determine the higher risk child based on BMI and co-morbid conditions. The investigators will also be doing a retrospective chart review of 300 patients with BMI 95% and looking at various factors during the operative and post-operative period.

The purpose of this study is to develop a better understanding of factors affecting American's energy balance related behaviors - in this case, food intake and activity. In the present study we will describe the relative contributions of individual psychology and physiology (including metabolism, mood, and sleep habits) and external (season, stressors) contributions to changes in adiposity over a year in free-living individuals. This study will illuminate season's role in changes in energy balance related behaviors and body weight and composition. Ultimately, this information will be used to identify factors affecting food consumption and individual activity during seasonal periods to help to segment interventions for obesity prevention in mid-life women.

The purpose of this study is to determine if gastric bypass patients experience hypoventilation in the immediate postoperative period, and to what degree.

The purpose of this study is to understand what happens when someone either becomes more active or more inactive. This study will measure your energy intake, energy expenditure, and body composition under normal conditions, when you become active, and when you become inactive.