Obesity Clinical Trials

Obesity affects over one third of US adults (\>72 million, with BMI ≥30 kg/m2), and the proportion of US adults with BMI ≥40 kg/m2 has doubled in the last 20 years. Obesity is associated with increased mortality through its linkage to comorbidities including diabetes, hypertension, dyslipidemia, osteoarthritis, sleep apnea and psychosocial disturbances. Given its prevalence, impact on morbidity and mortality, and economic cost, limiting the spread of obesity and its consequences is one of the most important problems of our time. In this proposed study, investigators will recruit participants from a wide range of body mass index (BMI), ethnicity and Diabetes risk to collect data and blood, stool and adipose tissue samples in the San Francisco bay area. Read Less

The aim of this project is to pilot test a novel mobile app intervention for adolescents with dysregulated eating behaviors and elevated weight status. This intervention will incorporate evidence-informed strategies targeting self-regulation into cognitive-behavioral treatment for maladaptive eating. Adolescents will use the app for 16 weeks and provide feedback on its usability and effectiveness in managing dysregulated eating. Read Less

Purpose: This study will test the efficacy of a family-focused lifestyle intervention for reducing type 2 diabetes (T2D) risk factors and increasing Quality of Life (QoL) among high-risk Latino families. Read Less

Eating Better Together is a 6-month pilot program that teaches families about healthy eating and activity and provides home deliveries of fresh fruits and vegetables from a local retail partner. Read Less

Preliminary findings from the investigators' lab suggest that circadian misalignment, occurring when meals and sleep are mistimed from one another, alters resting state neuronal processing in areas relevant to food reward and interoception; supporting a role of sleep and meal misalignment, on energy balance regulation. No study has been done to disentangle the effects of sleep and meal timing on body weight regulation, independent of sleep duration. This study will provide information to guide messaging related to timing of meals and sleep that can be translated to individuals whose sleep follows unconventional times, such as shift workers and those with jetlag and social jetlag. Read Less

African American adults that live in economically disadvantaged areas are at an increased risk for obesity and cardiometabolic disease. The treatment program being tested in this research study aims to address these factors and increase outcomes for the study population. The purpose of this research study is to find out about the feasibility and acceptability of using house chats (HC) as a model for a weight loss program in a real-world, community-based setting. Read Less

African American adults that live in economically disadvantaged areas are at an increased risk for obesity and cardiometabolic disease. The treatment program being tested in this research study aims to address these factors and increase outcomes for the study population. The purpose of this research study is to find out about the feasibility and acceptability of using house chats (HC) as a model for a weight loss program in a real-world, community-based setting. Read Less

The goal of this study is to understand the role of brain glucose transport in individuals with obesity and the association with cerebral hypometabolism and these individuals' response to plasma glucose elevations. The main premise is that obesity leads to reduced brain glucose transport and that we can measure this reduction with magnetic resonance spectroscopy (MRS). The secondary premises are that this reduction is driven by elevated non esterified fatty acids which act to turn on specific signaling pathways that regulate brain GLUT1 levels. Read Less

* Prolonged sitting (sedentary behavior) is a risk factor for decreased kidney function, obesity, diabetes and mortality. Prolonged sitting is associated with decreased kidney function and increased risk of diabetes, heart disease and death. * In a previous pilot study funded by NIH, it was shown that a Sit Less, Interact and Move More (SLIMM) intervention targeting sedentary behavior in people with kidney disease was able to decrease prolonged sitting but that effect was not sustained. * Therefore, the researchers are currently conducting a follow-up study named Sit Less, Interact and Move More (SLIMM) 2. * This NIH funded study is conducted at the University of Utah and Stanford University. * The purpose of this study is to see if guided resistance training (to improve muscle strength) and semaglutide (FDA approved diabetes and weight loss medication that might also improve physical function) can boost adherence to the SLIMM Intervention and reduce sedentary behavior. Read Less

Randomized controlled trial of a curriculum intervention teaching patients to eat a whole-food plant-based dietary pattern versus standard of care in kidney transplant recipients within the first few months of transplant Read Less

The overall objective of this application is to investigate the effects of obesity on lung function, exercise tolerance, and DOE in older obese adults as compared with older adults without obesity, using a novel probe for mechanically unloading the thorax at rest and during exercise. The investigators will use 1) continuous negative cuirass pressure, and 2) assisted biphasic cuirass ventilation to decrease obesity-related effects in older obese adults. Our approach will be to examine respiratory function, exercise tolerance, and DOE with and without mechanical unloading in older obese men and women (65-75 yr), including those with respiratory symptoms (defined by a score of 1 or 2 on the modified Medical Research Council Dyspnea Scale), as compared with older adults without obesity. Specific Aims: The investigators will test the following hypotheses in older adults with and without obesity: Aim 1) Obesity will decrease respiratory function but to a greater extent in older obese adults with respiratory symptoms, (as evidenced by altered pulmonary function and breathing mechanics at rest); Aim 2) Obesity will decrease exercise tolerance (as evidenced by peak V•O2 in ml/min/kg, i.e., physical fitness), but not cardiorespiratory fitness (as evidenced by peak V•O2 in % of predicted based on ideal body wt), except in older obese adults with respiratory symptoms where both may be reduced during graded cycle ergometry. Aim 3) Obesity will increase DOE but to a greater extent in older obese adults with respiratory symptoms as evidenced by increased ratings of perceived breathlessness (sensory \& affective dimensions) during exercise. Aim 4) Mechanical unloading of the thorax will improve respiratory function, submaximal exercise tolerance, and DOE in older obese adults, but to a greater extent in older obese adults with respiratory symptoms. Read Less

In the U.S. it is recommended that children consume whole cow's milk (3.5% fat) from ages 1 to 2 years to support rapid early growth and brain development, and then at age 2 years transition to low-fat (1%) or non-fat milk to reduce saturated fat and calorie intake. To date, few studies have examined the optimal milk type for children to prevent obesity. This randomized controlled trial will evaluate the effect of consumption of whole versus 1% milk on child adiposity. Read Less