Clinical Research Directory

BRE-13: Mediterranean Diet

Explore the effect of MedDiet vs. Usual Diet on circulating and breast tumor fatty acid profiles. The investigators aim to examine impact on tumor biology in newly diagnosed participants.

Nutrition Outcomes Using a Randomized Intervention Via Smartphone on Dietary Habits

The goal of this study is to learn if a nutritional smartphone application can improve the dietary habits in adults. The main objectives are: To explore if the use of a nutritional mobile application can improve a) mindful eating b) dietary diversity c) self-regulation of eating behavior d) calories consumed from healthy food groups vs unhealthy food groups among adults living in a low and middle income country.

Bite Sized Biomarkers

The primary objective of this study is to rigorously evaluate the effectiveness of a Food is Medicine (FIM) intervention using objective biomarkers and to determine the role of nutritional monitoring on the impact and sustainability of integrating nutrition supports into primary care.

Early Childhood Dietary Assessment Study

The goal of this crossover randomized controlled trial is to develop a proxy reporting protocol for a traditional 24-hour dietary recall (24HR) and an ecological momentary assessment (EMA) assisted 24-HR for use among children between the ages of 2 and 5 years. The main aims are to: 1. Assess the usability and feasibility of each proxy-reporting protocol and dietary assessment methodology. 2. Describe the dietary misreporting captured using each proxy-reporting protocol, and 3. Explore the accuracy of energy intake estimation of the 24HR and EMA+24HR methods, compared to objectively measured food intake. During the research study, participants will: 1. Be provided with one meal and two snacks each day to provide to their child on three consecutive days. Foods can be offered to their child at times of their choosing, and leftovers will be placed back into reusable food storage containers to be picked up by research study staff. Uneaten foods will be weighed for an objective measure of intake. 2. The day after study-provided foods are given to the child, the adult caregiver will complete a proxy-reported 24HR phone call with a trained research assistant. 3. In the EMA+24HR condition, caregivers will be provided access to an online platform where they will upload pre- and post-photographs of all of their child's eating occasions across the three days that study-provided foods are eaten.

Investigating the Effects of Beef Consumption on Cognitive and Brain Health

The goal of this clinical trial is to learn if eating more beef will lead to better cognition and a healthier brain in younger adults. The main questions it aims to answer are: * Does eating more beef lead to higher scores on cognitive tests and better quality of life? * Does eating more beef lead to better brain function? Researchers will compare participants in the experimental group (participants who will eat 25 ounces of beef every week during the dietary intervention) to control participants (participants who will eat 5 ounces of beef every week during the dietary intervention). Participants will: * Be instructed to prepare and consume ready-to-eat beef meals along with their regular diet and not eat any more beef other than what they are given * Visit the study facilities once every week to pick up ready-to-eat beef meals; and complete a brief survey every week to track their consumption of the provided beef meals, and a dietary survey every 4 weeks * Visit the study facilities before and after the 12-week of intervention period for researchers to study them

Free-living Validation of the RFPM in Adolescents

The primary aim of this small study is to test the validity of the Remote Food Photography Method and an updated SmartIntake app in a sample of adolescents. The investigators will test the validity (accuracy) of the method/app at estimating energy intake in free-living conditions over approximately three days compared to doubly labeled water. This is a small study that has low statistical power, but will provide important data nonetheless and inform future research.

Combatting Muscle Loss in Obese Adult Patients on GLP-1 Medications Through Dietary Counseling and Exercise During Treatment Evaluates Whether a 12-week Exercise and Individualized Nutrition Program Can Reduce Muscle and Bone Loss and Improve Strength, Fitness, and Function in Obese Adults on GLP-1

Obesity remains a critical public health challenge and is associated with increased rates of morbidity, mortality, and chronic disease worldwide. In recent years, glucagon-like peptide-1 (GLP-1) receptor agonists, such as semaglutide, have emerged as highly effective pharmacological treatments for obesity, producing substantial weight loss and favorable metabolic improvements. These medications are now widely prescribed, with estimates suggesting that nearly 12% of Americans are currently using or have previously used GLP-1 therapies. Despite their demonstrated benefits, growing evidence indicates that GLP-1-associated weight loss may be accompanied by unintended reductions in skeletal muscle and bone mass. This potential side effect is of increasing concern, as muscle and bone are essential for metabolic health, physical function, injury prevention, and recovery from illness or surgical intervention. Loss of skeletal muscle during weight reduction may negatively impact strength, mobility, insulin sensitivity, and long-term health outcomes. These risks may be further compounded in individuals experiencing reduced physical activity, mechanical unloading, or prolonged caloric deficits. In clinical and surgical populations, such as individuals undergoing orthopedic procedures, mechanical unloading and disuse already predispose patients to muscle and bone atrophy. When combined with pharmacologically induced weight loss, these factors may further hinder recovery, impair functional capacity, and compromise musculoskeletal integrity. As GLP-1 therapies are increasingly adopted across diverse populations, understanding how to preserve lean mass and bone health during treatment has become an important clinical and public health priority. Exercise training, particularly resistance training, combined with appropriate nutritional support, has consistently been shown to preserve and enhance skeletal muscle and bone mass during weight loss. Structured exercise interventions can mitigate sarcopenia and osteopenia while improving muscular strength, cardiorespiratory fitness, metabolic health, and overall physical function. Similarly, individualized dietary counseling, particularly when focused on adequate protein intake and nutrient timing, plays a critical role in supporting muscle protein synthesis and skeletal health during caloric restriction. Together, these lifestyle strategies may not only counteract the potential adverse musculoskeletal effects associated with GLP-1 therapy but also enhance treatment efficacy by improving cardiovascular risk profiles, insulin sensitivity, systemic inflammation, and physical resilience. Despite the growing use of GLP-1 medications, there remains a limited body of prospective research examining structured lifestyle interventions specifically designed to preserve muscle and bone mass during GLP-1-induced weight loss. Addressing this gap is essential to ensure that pharmacological obesity treatments support long-term health, functional independence, and quality of life. Integrating exercise and nutrition interventions into GLP-1 treatment protocols may represent a scalable and clinically meaningful strategy to optimize outcomes and reduce unintended consequences of rapid weight loss. The purpose of this study is to evaluate whether a structured lifestyle intervention combining exercise and individualized nutritional counseling can mitigate skeletal muscle mass loss in obese adults undergoing treatment with GLP-1 receptor agonists. The primary objective of this study is to determine whether participation in a structured 12-week exercise program, in conjunction with individualized dietary counseling, preserves skeletal muscle mass and bone mineral density during GLP-1 therapy. Secondary objectives include assessing changes in muscular strength, cardiorespiratory fitness, and overall functional capacity. Findings from this study aim to inform best practices for integrating lifestyle interventions with pharmacological obesity treatments and to support safer, more effective, and functionally protective approaches to weight management in adults receiving GLP-1 therapy.

Analysis of Dietary Intake in Professional Female Football Players

This study evaluates the dietary intake of professional female footballers against nutritional guidelines, analysing differences by age, position, and location (UK vs Spain). Using a cross-sectional design, it will include 20-30 players per club from four clubs, aged 18+, collected via the Snap-N-Send method and analysed with Nutritics software. Variables include energy intake, macronutrients, and micronutrients, with data assessed using MANOVA, t-tests, and Shapiro-Wilk tests. The aim is to determine dietary adequacy and provide insights to improve nutrition education and wellbeing for female athletes.

Polish Infants and Toddler Nutritional Study

A cross-sectional study representative of the Polish population of children aged 5 months to 6 years conducted in the cross-sectional study model, the main objective of which is to assess the nutritional value of the diet of children aged from 5 months to 6 years with regard to the basic macronutrients: protein (P), fat (F), carbohydrates (C). The study will include: dietary interviews, which will include the Food Frequency Questionnaire questionnaire (FFQ) and a 3-day food diary, as well as anthropometric measurements. The study will involve 1,000 children who will be selected by a random draw based on government database. The survey will be conducted by trained field interviewers - training will be provided by a dietician and an anthropologist. The study also included validation of the FFQ questionnaire.

Efficacy of a Dietary Supplement Powder Formula (Daily Ultimate Essentials) in an Adult Population.

Healthy Adult subjects