Active clinical trials for "Overweight"

This study will examine the impact diabetes genetic counseling on patient motivation and disease prevention behaviors among subjects with pre-diabetes. Intervention subjects will be provided with their individual diabetes genotype risk score derived from aggregating the combined results of 37 diabetes risk-associated genetic loci. Controls will not be tested. All subjects will be enrolled in a 12-week diabetes prevention program.

This study will explore the eating habits of adolescents and determine if eating behavior is linked to genetics. Healthy adolescents between 13 and 17 years of age may be eligible for this study. Candidates come to the NIH Clinical Center at 8:00 AM to be screened with the following: Medical history and brief physical examination, including height, weight, and body fat measurements. Body fat is measured using a device called a Bod Pod. The adolescent sits inside the device for about 5 minutes and the machine determines body fat by measuring air movement. The adolescent must wear a tight-fitting swimsuit for this test. Urine test to look for sugar or protein in the urine and to test for pregnancy in females. Blood tests for routine chemistries and for gene studies related to eating behaviors. Questionnaires and interviews about the adolescent s general health and eating habits. Acclimatization to test meal conditions for the study. The adolescent is given a breakfast shake to drink. Participants come to the NIH Clinical Center at 10:30 AM for laboratory meal testing. At this visit, the adolescent does the following: Eats food from a buffet of everyday foods that most kids eat. Fills out questionnaires. Tastes and rates the flavor of a variety of snack foods.

This study will determine whether resting beta cells (cells in the pancreas that produce insulin) for 2 weeks will improve the ability of patients with Type 2 diabetes mellitus (T2DM) to make insulin. Beta cells can rest by giving patients insulin shots. The study will also examine how teenagers with T2DM feel about having diabetes and explore differences between young people with and without T2DM. This study includes patients 12 to 25 years of age with T2DM who are overweight and who were diagnosed within 2 years of enrolling in the study. Healthy individuals of normal weight or who are overweight are also eligible. Candidates are screened with a medical history, physical examination and laboratory tests. Participants with T2DM are assigned to one of two groups. Group 1 takes an anti-diabetes medicine called metformin and follows a diet prescribed by a study staff dietitian for 2 weeks. Group 2 takes metformin, follows the prescribed diet, and receives insulin through a pump under the skin for 2 weeks. During these two weeks, all participants have the following tests: Frequent blood sugar checks. Oral glucose tolerance test (routine diabetes test in which blood samples are drawn before and several times after the subject drinks a sugary solution). Arginine stimulation to test the response of the body to arginine, a normal ingredient of food that stimulates the release of insulin. Two catheters are placed into veins in the arms, one to administer a liquid containing arginine, the other to draw the blood samples. Ultrasound of the blood vessels in the neck to check for hardening of the arteries. Metabolism test to measure the amount of oxygen used during rest. The subject breathes normally during rest while wearing a canopy over his or her head for about 20 minutes. MRI scans of the abdomen to examine the amount of fat in the belly (at the beginning and end of the study) DEXA scan to determine percent body fat. Tests to explore quality of life and feelings about health, work or school, friends and family. Exercise testing on a treadmill or stationary bicycle. Genetic studies for information on diabetes and obesity. Normal volunteers have blood draws, oral glucose tolerance testing, MRI scan, DEXA scan, psychological testing, exercise testing, and genetic testing.

This two-year prospective, observational study examines the relationship between habitual short sleep and weight gain, as well as the association between habitual short sleep and behaviors that put people at risk of weight gain. Habitual short sleep is defined as sleeping <6 hours per night on average. Participants will be healthy freshmen college students who are normal weight or overweight. Exclusion criteria include pregnancy, an inability to be ambulatory, currently taking a medication that could influence or interfere with sleep, or reporting a past/current neurological problem, past/current head injury, past/current sleep disorder, current mood, anxiety, or substance use disorder, current psychosis, or current suicidal ideation/plans. Recruitment will be during new student orientations that occur prior to fall semester. Eligibility will be determined using a screening interview, the DSM-5 Self-Rated Level 1 Cross-Cutting Symptom Measure - Adult, and DSM-5 Self-Rated Level 2 measures. Eligible participants will be assessed at baseline (time 1), and 8, 16, and 24 months after Time 1. Sleep, physical activity, food/beverages, substance use, and technology use will be collected daily during each eight day recording period. Sleep will be measured with a sleep monitor, activity will be assessed using an accelerometer, food/beverages will be obtained using the National Cancer Institute's Automated Self-Administered 24-hour Dietary Assessment Tool, and substance use and technology use will be measured via self-report. Participants will attend a session after each recording period to have weight and height measured, be scanned via Dual-energy x-ray absorptiometry (DXA), and complete a packet of questionnaires about demographics, health, sleep quality and beliefs, life events, food cravings, and physical development. It is hypothesized that participants will have different habitual sleep trajectories over time. It is also hypothesized that two particular sleep trajectories (stable habitual short sleep and increasingly shorter habitual sleep across time) will be significantly related to weight gain, increased body fat percent, and weight gain risk behaviors (i.e., increased caloric intake and decreased physical activity). Finally, it is hypothesized that the two sleep trajectories will be significantly associated with higher rates of media and technology use and higher rates of problematic sleep-related beliefs/behaviors.

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.

Due to the increasing prevalence of childhood obesity and overweight, health problems may begin to appear at an early age. The aim of this study is to examine physical activity level, core performance, anthropometric measurements and peak expiratory flow in overweight and obese adolescents compared to normal weight adolescents.

South Asian men have lower cardiorespiratory fitness (CRF) than white men which is associated with a reduced capacity to oxidise fat during exercise. This is a risk factor for weight gain/regain. Whilst comparisons with Europeans are valuable, Asians are not a homogenous group and substantial differences in obesity and body fat partitioning exist with ethnicity. This cross-sectional pilot investigation aims to compare CRF and fat oxidation at rest and during exercise in Chinese, Indian and Malay men (from Singapore) with elevated BMI (23 -30 kg/m2). Forty-five men (15 each ethnicity) with elevated body mass index (23 -30 kg/m2) will complete testing in a fasted state on two separate mornings separated by ≥72 hours: (i) for a measure of CRF; and (ii) for a measure of fat oxidation at rest and during incremental exercise.

Older hypogonadal obese veterans previously participated in a 6 month lifestyle change (diet-induced weight loss and exercise) study with or without testosterone replacement therapy before being followed for the following year at the clinic while receiving standard of care consisting of diet and exercise counseling (for healthy lifestyle change) and testosterone replacement therapy. This study will determine if long-term lifestyle change and testosterone replacement therapy with associated improvement in physical and metabolic health can be maintained in obese older adults.

The purpose of this research study is to learn more about how our body produces sugar, breaks down fat for fuel, and makes insulin (the major hormone that controls the production of blood sugar and fat breakdown) during a 24-hour day and how body fat and muscle are involved in these processes.

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.