Active clinical trials for "Weight Loss"

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.

A prospective study on 50 consecutive patients who are going to have a lower body lift procedure is performed. Measures include comorbidities and complications. Risk factors assessed including patient age, gender, highest lifetime body mass index (BMI) (BMI max), current BMI, excess weight loss (EWL), type of weight loss and nicotine consumption.

Colorectal cancer (CRC) is a significant and growing health burden in Hong Kong. According to data from Hong Kong Cancer Registry, CRC ranked the first in incidence and the second in mortality, with around 5,000 new cases diagnosed and more than 2,000 cancer-related mortality in 2014. The investigators aim to evaluate the association between serial weight change during first line treatment and outcomes in patients with metastatic CRC.

Prospective multicenter observational clinical study on a dietary regimen in obese patients scheduled for bariatric surgery.

Mucositis and xerostomia are the most common complications of head and neck (H&N) irradiation, and the combination of chemotherapy and radiation therapy is associated with a significantly higher rate of complications. Mucositis usually develops during the second or third week of a course of standard radiotherapy, and the pain it causes peaks between the third and last week of treatment. The pain then persists for at least one month following the completion of therapy, and may be so overwhelming that it prevents patients from swallowing food and fluids. The patient is therefore at a risk to develop malnutrition, and must be treated vigorously. In this respect, the use of gastrostomy tubes (PEG) has been shown to be beneficial. Completion of the full course of irradiation, without interruption, is important for achieving best possible results in cancer of the H&N. It is therefore essential to identify and refer patients at risk to receive effective and timely nutritional intervention. Since mucositis represents a clinical continuum which differs between patients, it is difficult to assess before-hand which patients will be at risk. There is no simple laboratory tool available, which could predict which patients are susceptible to develop severe mucositis and dysphagia, and eventually will require a feeding gastrostomy. The first phase of mucositis, inflammation, results in the production of pro-inflammatory cytokines such as interleukin-1 (IL-1) and tumor necrosis factor-alpha (TNF-α). In general, the inflammatory cytokines IL-1, interleukin-6 (IL-6) and TNF-α are elevated in inflammatory conditions and are found in increased levels in blood and tissue fluid during inflammation, while anti-inflammatory cytokines are produced in a decreased manner. The main purpose of this study is to find the best indicators and prognosticators of mucositis occurring in the healthy oral tissues of H&N cancer patients receiving treatment, and to understand the cytokines balance mechanism of action. Assuming there is a correlation between high cytokines levels during inflammation and the severity of radiation induced mucositis, finding these prognostic factors may help us predict during the first part of the treatment the need for PEG, placing it prior to the complications associated with severe mucositis on one hand, and avoiding unnecessary procedures on the other hand.

The objective of this study is to demonstrate the ease of deployment of a novel magnetically-controlled ingestible weight loss microcapsule* and the functionality of the magnetically controlled inflation of the balloon within the stomach.

The present study will carry out a workplace health promotion via MBI with lessons of dietary behavior to help overweight or obese workers to loss weight.

Participants will be randomized into two groups, one group will be the control (no intervention at all) and the other will be CHO-PRO (meal replacement, Generation UCAN supplement, 400ml, 20% solution). Prior to the start of the experiment, all participants will be asked to record their satiety ratings, appetite and desire to eat (10-point visual analogue scale) 30, 60 and 120 minutes after their regular dinner for 3 days. On the first day of the experiment, all participants will be asked to measure their waist and hip circumferences, fasting blood glucose level, maximal number of pushups and body weight using a scale at home prior to breakfast. Instructions on how to do the measurements properly will be recorded in a video and distributed to the participants. Participants in the control group will not receive any intervention. Participants in the CHO-PRO group will be provided with the supplement and they will be asked to consume the CHO - protein supplement (Generation UCAN supplement, 250ml, 10% solution) 6 to 7 hours after lunch, in place of their dinner for 6 weeks. They will also be asked to record their satiety ratings, appetite and desire to eat (10-point visual analogue scale) 30, 60 and 120 minutes after each meal replacement drink. All participants will be required to complete a dietary record, prior to, and during (at weeks 2 and 4) intervention. To track adherence of the CHO-PRO group, participants will be asked to check off the calendar that they did not consume the meal replacement due to various reasons. On day 43, all participants will be asked measure again waist and hip circumferences, fasting blood glucose level, maximal number of pushups and body weight using a scale at home prior to breakfast again.

A study to examine post-prandial gut-hormone secretion, meal-induced thermogenesis, fasting plasma metabolomic/lipidomic and cardiovascular indices among surgically managed obese individuals in the long term compared to conservatively managed obese patients.

This study is designed to look at the impact that support and motivation has on patients with Atrial Fibrillation's ability to lose weight and maintain this. We believe that weight loss has a positive impact on the reduction of symptoms of atrial fibrillation and can decrease the likelihood of the arrhythmia returning following cardio version. This study is designed for patients who have a diagnosis of Atrial Fibrillation and have a Body Mass Index greater than 27. In the study, we plan to provide support and motivation to patients with atrial fibrillation to encourage weight loss. There are several weight loss strategies available to follow. Information will be provided about each strategy to encourage informed choices. If the initial strategy chosen is not working, this can be change to a more suitable one as required. Follow up will be by telephone at 2 and 4 weeks then every month thereafter where you will be asked your weight and to clarify the weight loss strategy you are following. You will be seen at 6 and 12 months where you will have an ECG, BP check and your weight measured. A final telephone assessment will take place at 24 months. We hope that the research will in the future help patients with Atrial Fibrillation manage and maintain their weight loss to improve their symptoms and prevent recurrence of the arrhythmia. The results of this study could potentially change practice in our centre by providing more structured weight loss clinics for patients with Atrial Fibrillation