Obesity is a complex health condition characterized by excess body fat, often associated with increased risk of various chronic illnesses. Clinical trials related to obesity investigate diverse approaches aimed at managing weight and improving overal...
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Found 2577 Actively Recruiting clinical trials
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Researchers are evaluating how well symphysis fundal height SFH measurements alone compare to SFH combined with point of care ultrasound POC-US measuring fetal abdominal circumference AC for detecting small or large for gestational age infants among low-risk pregnant women after 35 weeks gestation. The study aims to improve prenatal identification of abnormal fetal growth, which is linked to risks for mother and baby. This open-label, randomized trial is investigator-sponsored and focuses on low-risk pregnancies managed by midwives. Participants are randomly assigned to one of two groups one group will have fetal growth monitored using SFH measurements alone, while the other will have SFH plus POC-US to measure fetal AC and assess amniotic fluid volume. Measurements occur at scheduled antenatal visits at 35-38, 40, 41, and beyond 41 weeks gestation. If screening suggests abnormal growth or amniotic fluid levels, a formal obstetric ultrasound by a specialist will be performed. All women will have POC-US at 41 and 41 weeks to check amniotic fluid, regardless of group. During the study, midwives will review medical histories, conduct physical measurements, and perform ultrasound assessments following the assigned method. Researchers will compare prenatal screening results to actual birth weights to identify small or large infants. They will also track the number of formal ultrasounds requested, cases of abnormal amniotic fluid, and maternal and neonatal outcomes. Participation lasts from enrollment at 35-38 weeks through delivery and initial postnatal assessment, about one year on average.
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Researchers are investigating whether a multifactorial lifestyle intervention involving a Mediterranean diet with reduced calories and increased physical activity can help middle-aged adults 30-50 years with metabolic syndrome lose weight and maintain that weight loss over time. The study also aims to understand the social and demographic challenges people face in sticking to these healthy habits and to examine the lifestyle patterns of this group. Participants will be randomly assigned to one of two groups. One group will follow general lifestyle recommendations from primary healthcare providers, while the other will receive an intensive program that includes monthly individual and group sessions over 6 months to encourage a Mediterranean diet with 25% fewer calories and physical activity based on WHO guidelines. The goal for the intervention group is to reduce their initial weight by 5-10% within 6 months and maintain this loss after 12 months. Throughout the study, participants will undergo assessments including measurements of weight, waist size, blood sugar, triglycerides, and glycated hemoglobin to monitor changes in their health. Data on demographics, diet, clinical parameters, and laboratory tests will be collected. After the 6-month intervention, a follow-up at 12 months will evaluate how well participants maintain their lifestyle changes. The study emphasizes tracking adherence and identifying factors that help or hinder long-term weight loss maintenance.
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Researchers are evaluating the PILI Aina project to improve the management of common diet-related cardiometabolic diseases like type 2 diabetes, hypertension, dyslipidemias, and obesity among Native Hawaiian adults. This project aims to reduce risk factors for new diet-related illnesses by promoting traditional Native Hawaiian diets and improving social cohesion. The study focuses on adapting and testing an evidence-based multilevel intervention called PILI Aina to optimize its effectiveness and sustainability. The study involves a community-level component called Ai Pono, which includes quarterly hands-on cooking demonstrations and cultural lessons held over five years, for a total of 36 events. Each 2-hour event features cooking demonstrations, tastings, and education about the cultural importance of traditional foods like sweet potato, breadfruit, and kalo. These lessons aim to improve family and community eating environments and social cohesion. Attendance is limited to 30 people per event, with priority given to new participants after the first lesson. Participants will be surveyed at each event to assess their reactions, fruit and vegetable intake, confidence in healthy eating, and feelings of community support. Additionally, random samples of households in participating homesteads will be surveyed annually to measure family environment, nutrition environment, social cohesion, diet self-efficacy, food literacy, and social support. These assessments will occur at baseline and yearly for four years, helping researchers evaluate the impact and sustainability of the intervention over time.
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The 100-Year Human Aging Study is a long-term observational research project enrolling adult participants to undergo detailed multi-system health screenings and follow them throughout their lives until death. The study aims to identify which health measurements taken at enrollment and repeatedly over time can predict overall mortality, cause-specific death, serious diseases, and functional disability. It addresses the current lack of validated longevity measures by generating data on how various physiological and cognitive functions relate to aging outcomes. Participants undergo a comprehensive clinical screening that includes tests of cardiorespiratory fitness, strength, mobility, neurocognitive performance, sensory functions, and metabolic health. Structural imaging assessments like DEXA scans, echocardiography, electrocardiography, spirometry, retinal photography, and vascular ultrasound are performed. Laboratory tests and detailed medical, social, and environmental histories are also collected. The study allows participation from single tests up to a full two-visit screening, with repeat testing encouraged to track health changes over time. Throughout the study, participants receive individualized reports with investigational estimates of biological age and predicted mortality risks, which are being evaluated against actual health outcomes. Researchers collect data continuously on mortality, disease occurrence, disability, and health behavior changes. The study involves ongoing follow-up with periodic assessments and aims to preserve all collected data for future analyses, with participant involvement potentially spanning their entire lifespan.
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Researchers are evaluating whether taking tirzepatide before bariatric surgery can improve health outcomes for people with obesity and related medical conditions. This study aims to see if tirzepatide reduces inflammation in tissues and blood before surgery and how these changes relate to weight loss, metabolic improvements, and fewer complications after surgery. The trial is a Phase 4 interventional study comparing patients who take tirzepatide with those who do not before their planned surgery. Participants who are assigned to the tirzepatide group will self-inject 2.5 mg of tirzepatide once weekly for three months before surgery, following dose escalation instructions if needed. Both groups will receive education on dietary and lifestyle changes. During the three months before surgery, participants will visit the endocrine clinic monthly for drug prescription and side effect monitoring. The study continues through the surgery and post-surgery follow-up periods. Throughout the study, participants will keep a diary of drug use and side effects, and researchers will measure inflammatory markers such as C-reactive protein, interleukin 6, tumor necrosis factor, leptin, adiponectin, and RAAS at baseline, three months after drug use, and several times after surgery. Weight, blood pressure, blood sugar, cholesterol, and surgical complications will also be tracked up to one year after surgery. Participant involvement includes regular clinic visits, lab tests, and monitoring to assess the impact of tirzepatide on surgical outcomes and inflammation.
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Researchers are studying obstructive sleep apnea syndrome OSAS, a sleep disorder marked by loud snoring and repeated airway blockages during sleep that cause daytime tiredness. This observational study aims to create a prospective database to track changes in the upper airway volume and anatomy after maxillomandibular advancement MMA surgery, along with measuring the apnea-hypopnea index AHI and patients quality of life. The study collects detailed data on patient demographics, virtual 3D cone-beam CT CBCT surgical planning, orthognathic surgery details, sleep study results, and quality of life assessments as part of routine care.
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Researchers are conducting a randomized controlled trial to study the effects of 6 weeks of blood flow restriction BFR training on immune cell function and energy use in adults living with type 2 diabetes. The study aims to understand how this specific exercise approach impacts immune cells and bioenergetics, focusing on adults aged 19 to 64 years who have type 2 diabetes and engage in less than 150 minutes of moderate to vigorous physical activity weekly. Participants will be randomly assigned to one of two groups regular treadmill walking or treadmill walking with blood flow restriction. Both groups will exercise three times per week for 6 weeks, starting with 21 minutes per session in the first week and increasing to 32 minutes per session for the remaining weeks. The treadmill speed and incline will be set to achieve 40-50% of each participants heart rate reserve. For the BFR group, cuffs will be inflated based on personalized limb occlusion pressure, increasing progressively from 60% to 80% over the 6 weeks, with brief cuff deflations every 10 minutes for safety. Throughout the study, participants will undergo assessments before starting and after completing the 6-week intervention to measure changes in various immune markers, including T-cell oxygen consumption rate and several immune cell expressions. Researchers will monitor these immune and bioenergetic outcomes to understand the exercise effects. The entire study participation lasts for 6 weeks during which participants will attend scheduled exercise sessions and evaluation visits.
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Researchers are evaluating 7-Ketolithocholic Acid, a naturally occurring bile acid, to assess its potential metabolic benefits, particularly its ability to lower glucose levels in adults with prediabetes. The study aims to determine whether this treatment, combined with a low-glycaemic, calorie-restricted diet and increased physical activity, can reduce fasting plasma glucose and other metabolic markers. This research focuses on early intervention to potentially prevent or delay the onset of type 2 diabetes. Participants will be randomly assigned to one of two groups one receiving 400 mg of 7-Ketolithocholic Acid daily in coated tablet form, and the other receiving matching placebo tablets without the active ingredient. Both groups will follow a low-glycaemic, hypocaloric diet and recommended physical activity including aerobic exercise, resistance training, and flexibility activities. The study includes six visits over approximately 16 weeks, covering screening, enrollment, periodic monitoring, and end-of-treatment assessments. Throughout the study, participants will undergo laboratory tests including fasting plasma glucose, HbA1c, cholesterol levels, and oral glucose tolerance tests. Diaries for diet and physical activity will be maintained and verified at scheduled visits and phone calls. Researchers will monitor adverse events and medication use at each visit. The primary outcome is the change in fasting plasma glucose from baseline to week 12, with additional metabolic and body measurements assessed as secondary outcomes. The study duration per participant spans about four months from screening to end of study.
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Researchers are evaluating a magnetic-assisted surgical technique for revisional bariatric surgery, specifically converting sleeve gastrectomy to Roux-en-Y gastric bypass RYGB combined with hiatoplasty. This approach addresses long-term problems such as gastroesophageal reflux disease GERD in patients who have undergone laparoscopic gastric sleeve LGS surgery. The study aims to assess the surgical procedure and its outcomes in patients who are candidates for bariatric surgery with obesity. The surgery is performed using magnetic assistance to improve visualization and manipulation during key steps. It involves placing a single port in the umbilicus and an additional trocar, using magnets for liver retraction, dividing the omentum, repairing hiatal hernia, creating the gastric pouch, measuring and connecting intestinal limbs, and closing defects. A methylene blue leak test is done to check for leaks, and the entire Roux-en-Y gastric bypass is completed with magnet-assisted maneuvers. Participants undergo this bariatric procedure with magnetic assistance and are monitored for complications within 30 days, device malfunction within 1-2 hours post-procedure, and surgical time within 30 days. The study includes evaluations of surgical field exposure, anastomosis construction, and hernia repair. The total participation timeline includes the surgical procedure and follow-up assessments up to 30 days after surgery.
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Researchers are evaluating the effectiveness of a six-month virtually-delivered dietary education program called PEDALL to prevent overweight and obesity during maintenance chemotherapy in children and adolescents with acute lymphoblastic leukemia ALL. The study focuses on English and Spanish speaking families and considers key genetic and sociodemographic risk factors that may affect weight gain during treatment. Participants will be randomly assigned to one of two groups the PEDALL intervention group or the standard of care SOC group. The PEDALL group will receive 26 contact hours of specialized nutrition education through weekly one-hour virtual sessions over six months. The SOC group will receive printed educational materials and nutritional care according to their institutions usual practices. During the study, participants and their caregivers will engage in nutrition education and counseling sessions. Researchers will assess weight status, body mass index trajectories, lifestyle behaviors, and the influence of genetic and sociodemographic factors over time. The main goal is to prevent unhealthy weight gain during maintenance chemotherapy and improve long-term health outcomes for childhood ALL survivors. The study will last up to 3.5 years for primary outcomes, with additional follow-up extending to four years.
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