Eating Behaviors

This study is being performed to understand the effects of a lifestyle modification and sleep intervention on weight loss outcomes in adolescence. The main question the study aims to answer is: \- What are the initial effects of a lifestyle modification and sleep intervention, including effects on weight, eating behaviors and dietary intake, and sleep? Participants will: * Participate in remote, group-based, weekly weight loss and sleep coaching for 16 weeks. * Complete study assessments at baseline (pre-intervention), mid-intervention, and post-intervention. * Complete daily sleep diaries for three 7-day periods at each assessment point.

Background: \- Studies show that many factors affect children's eating behavior and health. These include sleep, mood, thinking skills, and genetics. Studying children over time may identify children at higher risk for eating-related health concerns. Objective: \- To understand how genes and environment influence eating behavior and health over time. Eligibility: \- Children ages 8-17 in good general health. Design: * Screening visit 1: Medical history, physical exam, body measurements, and questions. * 14 days: Participants will wear a wrist monitor and answer smartphone prompts about eating and mood. They may give a stool sample. * Screening visit 2: * Body measurements. * Saliva, urine, and blood samples. * Heart tests. * Meals provided (after fasting overnight). * Questionnaires and interview. * Behavior, thinking, and exercise tests. * X-ray of left wrist and full body.\<TAB\> * Some parents may have medical history, physical exam, and questions at screening visits. They may answer questions at the yearly visits. * Participants will have up to 6 yearly visits. They will give a urine sample and body measurements, and repeat the X-rays. They will have questions and behavior and thinking tasks. They may give stool samples. Visits will range from 3 to 8 hours. * Participants may choose to participate in other studies: * Stress and Hormones, 1 visit: While resting, participants will give saliva samples and have their heart monitored. Then they will do math. They will repeat the resting part, then do a computer task. * Brain Imaging, 2 visits: Twice, participants will perform tasks with a magnetic cone on their head then answer questions. Once, they will have an MRI, lying still in a scanner with a coil on their head. Before the first visit, participants will collect at-home saliva samples once a day for three days. During both visits, participants will perform tasks and answer questions that gauge their thinking skills and mood. * Experiment 3 (sleep/fatigue): Participants will complete 2 additional visits. During these visits, participants will complete a task on the computer for 2 hours, or watch a movie for two hours. After completion of the task/movie, they will answer questions and be provided with food. Participants will be compensated for the time and inconvenience involved with completing study procedures.

The primary purpose of this study is to investigate the influence of including water as a beverage at a snack on food intake in children.

The purpose of this study is to find out how early time-restricted eating affects body rhythms and improves cardiometabolic health in older adults.

The primary purpose of this study is to investigate the influence independent fn combined influence of variety and energy density on food intake at a meal. Additionally, individual characteristics will be examined for their influence on the effects of variety and energy density on intake.

This study will examine the effectiveness of the online family-based program focused on sustainable eating compared to weekly emails about environmentally friendly behaviours.

The primary purpose of this study is to investigate the influence of including water as a beverage at a meal on food intake, and if the influence of water consumption on food consumption is moderated by switching behavior. Additionally, other individual characteristics will be examined for their influence on the effects of simultaneous variety and portion size on meal intake.

This observational study investigates the prevalence and severity of disordered eating behaviors in adolescents aged 11-17 years with celiac disease. Participants complete validated self-report questionnaires (Youth Eating Disorder Examination Questionnaire, YEDE-Q, and Parent Eating Disorder Examination Questionnaire, PEDE-Q) and a structured clinical form. A healthy control group, matched by age and sex, is included for comparison. A longitudinal sub-cohort diagnosed with celiac disease \<6 months prior will be followed at 6, 12, and 24 months to evaluate changes in eating psychopathology and associated clinical variables.

Nature exposure has been found to be particularly beneficial for body image, as recent studies have identified a positive association between time spent in nature and positive body image. Positive body image, defined as the ability to accept and respect one's body, has been linked to greater life satisfaction and engagement in healthy behaviors. Conversely, negative body image is recognized as a public health concern due to its detrimental effects on both physical and mental health. It has been associated with symptoms of Body Image Disorders (BIDs), including Eating Disorders (EDs) and Body Dysmorphic Disorder (BDD). The Nature for Body Image (NBI) project aimed to examine the impact of a structured nature exposure intervention on improving body image among young women aged 18-35 years.

Pediatric feeding disorders (PFDss) affect children with age-inappropriate oral intakes lasting at least 2 weeks, associated with medical, nutritional, psychosocial or feeding skills dysfunction. Feeding is a complex function involving the digestive tract, and different structures. It evolves throughout the child's development. It involves the caregiver-child relationship. Dysfunction of one or more of these systems may be the cause of pediatric feeding disorders. PFDs affect 25% of children, 5% with severe forms. PFDs can have severe nutritional consequences. They often cause malnutrition, even undernutrition, and sometimes overweight.

The practice of yoga can positively impact body image, a psychological construct encompassing perceptual, emotional, cognitive, and behavioral aspects, which can be either positive or negative. Negative body image manifests as extreme dissatisfaction with one's body-a condition particularly common among young women-that places them at significant risk for developing Body Image Disorders (BIDs). In contrast, positive body image is characterized by an overall respect for one's body. Current research on the impact of yoga on body image has several limitations, making it challenging to determine whether yoga practice truly has a positive effect on body image and to identify the mechanisms underlying this impact. To address these gaps, the present project aims to overcome the limitations of existing studies by investigating the impact of yoga on body image through quantitative methodologies and by exploring the mechanisms that drive this effect. The project consists of two phases: 1. Investigating the impact of yoga on body image (both positive and negative) and eating behaviours in a population characterized by high levels of body dissatisfaction-young women. 2. Examining the psychological mechanisms underlying yoga's impact on body image, including increased interoceptive awareness, embodiment, and self-compassion, as well as a reduction in self-objectification.

The goal of this clinical trial is to assess the health-related effects of an exercise intervention in children aged 5-8 years. Main research questions: * Does a municipality-driven exercise intervention improve physical activity levels in children? * Does a municipality-driven exercise intervention improve sleep parameters in children? * Does a municipality-driven exercise intervention improve eating behaviors in children? * Does a municipality-driven exercise intervention improve quality of life in children? Study Design: Participants will be assigned to either: * Intervention group: Attend 1-2 weekly sessions of 45-60 minutes of child-friendly exercise for 1 year. * Control group: Receive no intervention. Data Collection: Participants will: * Complete questionnaires at baseline, and at 1-year, 3-year, and 5-year follow-ups. * Wear accelerometers for 7 consecutive days at baseline, and at 1-year, 3-year, and 5-year follow-ups.