Active clinical trials for "Weight Loss"

Although individuals following commercial intermittent fasting programmes consume meal replacement products during fasting days, further behavioural variables such as time of food consumption, sleep quality and duration, appetite and mood may significantly impact weight loss and intervention success. This project aims to assess behavioural patterns (dietary intake, sleep, meal timing, physical activity), mood and appetite on both fasting and non-fasting days and to investigate whether these are associated with weight loss.

The investigators will study the influence of fat cell size/number and adipose function on weight development over very long time periods (years). By comparing fat biopsies obtained at baseline and after >7 years, the investigators will determine the association between adipose morphology/function and changes in weight or development of cardiometabolic complications (e.g. insulin resistance, type 2 diabetes, dyslipidemia and hypertension).

Bariatric surgery is a powerful tool for producing significant and durable weight loss. Yet, not all patients achieve initial weight loss success and many patients have weight regain as early as 1-2 years post-surgery. Suboptimal weight loss patterns not fully explained by surgical, demographic, and medical factors has led to greater emphasis on patient behaviors evidenced by clinical guidelines that focus on appropriate eating and physical activity. However, research to inform such guidelines typically has relied on imprecise measures or not been specific to bariatric surgery. There is also little understanding of mechanisms by which psychosocial factors influence outcomes. Thus, there is a need to: (a) measure behaviors and psychosocial factors thought to be related to surgical outcomes (particularly those emphasized in guidelines) using innovative strategies to maximize data quality, (b) determine which behaviors and psychosocial factors are related to outcomes, and (c) explore how psychosocial factors influence weight both directly and via influences on behavior. Our research team was the first to employ innovative mobile health (mHealth) technology within an Ecological Momentary Assessment (EMA) framework to measure adherence to recommended behaviors at 6 months post-surgery. The investigators propose to build on this work by using EMA to measure behavioral, psychosocial, and environmental factors over a longer period to understand how they predict success and risk after surgery. An NIH-funded multi-sensor PiLR HEALTH platform will integrate objective sensor data measuring behaviors and the environments in which they are performed with self-report information collected via smartphone in real-time and in patients' natural environment. Participants (N=100) recruited from 2 ASMBS-designated centers of excellence will complete a 10-day EMA protocol pre-surgery and at 3, 6, and 12 months post-surgery to assess recommended behaviors [e.g., meal frequency, PA], psychosocial indicators with the most prior evidence of an association with surgical outcomes (e.g., mood/depression), and key environmental factors (e.g., type/quality of the food environment). Participants will also be weighed at the above time points. Along with describing patterns in behaviors and their relation to weight loss, the investigators will test causal models to understand how complex systems of behavioral, psychosocial, and environmental factors affect weight loss, and to identify optimal targets for intervention. This project has the potential to build a much more sophisticated and valid understanding of who is and is not successful after bariatric surgery and why. This new understanding will directly contribute to improved (i.e., specific, consistent, and validated) guidelines for recommended pre and postoperative behaviors, which could lead to improved surgical outcomes. The enhanced understanding will also inform behavioral, psychosocial, and environmental targets for intervention that are mostly likely to improve surgical outcomes.

The massive weight loss leads an important excess of skin on thoracic level giving the aspect of a feminine breast with a relatively important ptose. Several techniques were described in the literature about gynaecomastia , but the post-bariatric pseudo-gynaecomastia was not handled yet enough. Moreover, there is no single consensual technique on this subject. The technique used in this service was described for the first time in 2008 ( 1 ) on a serie of 8 patients with an average follow-up of 13 months. Although the results are promising, no other publication was done, and the procedure remains badly represented in the world literature.

This study evaluates how ectopic fat (in the pancreas, heart, liver and skeletal muscle), visceral fat, and subcutaneous fat changes following surgically induced weight loss using gastric banding. The investigators also evaluate whether changes in pancreatic fat content correlate with improvement in beta-cell function.

To compare a caloric supplement containing peptides and medium-chain triglycerides, a caloric supplement containing whole protein and long-chain triglycerides, and no caloric supplement for the prevention of weight loss in individuals with AIDS who take a daily multivitamin and mineral supplement.

The aim of this project is to improve the evidence-base regarding lifestyle and mental health symptoms among fitness instructors. A national cohort of fitness instructors will be invited to participate in this study by responding to an online questionnaire. The questionnaire will consist of items regarding exercise, nutrition, eating disorders, the menstrual cycle, depression, anxiety, body dissatisfaction and satisfaction, drive for muscularity and leanness, and experiences of sexual harassment. Findings from this study will provide an evidence-base for initiatives to improve/optimize mental health among fitness instructors, and also in the process of developing fitness centres to a core partner in public health and health promotion work.

The study is investigating weight loss and treatment patterns associated with the use of Saxenda® in adult patients. The aim of the study is to assess the weight loss associated with Saxenda® in patients with obesity or overweight. Saxenda® was prescribed to participants by study doctor independently of this study. The study will last for about 4 months, where the data will be collected from the available medical records. There will be no additional activities expected from participants in the scope of study because it is a chart-review study.

The investigators are using a community-based participatory research (CBPR) model to develop a lifestyle intervention targeting weight loss that is specifically tailored to women in perimenopause.

There is a variability in weight loss after gastric bypass surgery for obesity despite a standardised surgical procedure. This study aims to investigate if genetic markers can predict outcome after gastric by-pass surgery in treatment of obesity. The investigators will also study if adenovirus infection can influence the outcome after surgery. In a subgroup of patients, hormonal changes after gastric by-pass surgery will be assessed. Lipid and protein patterns will be assessed in plasma and tissues. Omental and subcutaneous fat as well as liver biopsies and whole blood are stored in a biobank. The same tissues will be collected from non-obese controls undergoing gallbladder surgery.