236 Studies Now Enrolling
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Displaying 1 - 21 of 21
Condition: Obesity
Investigator: Ilene Fennoy, MD
Status: Currently Recruiting
Bariatric surgery and a once-weekly glucagon-like peptide-1 medicine both cause major weight loss in teens, but their effects on mouth and gut bacteria and on damaged blood fats tied to metabolism are still unknown. This study will collect saliva, stool, and routine blood samples from adolescents before treatment and six months later to see how these…
Condition: Obesity
Investigator: Joshua Cook, MD, PhD
Status: Currently Recruiting
We are conducting a research study on the effect of high insulin levels on the buildup of excessive liver fat ("fatty liver disease") in people at risk for type 2 diabetes. We are seeking adult volunteers, ages 18-65, who have obesity with a body mass index of 30-45, and have been diagnosed with, or are at risk for, prediabetes and metabolic…
Condition: Obesity
Investigator: Daphna Shohamy, PhD
Status: Currently Recruiting
We are researchers at Columbia studying the learning and decision making. We are looking for participants over the age of 18, who have been prescribed Trizepatide for weight loss. Participants will be asked to complete an MRI scan and play computer games. Participants earn $25 per hour. Help us understand how the GLP-1 agonists affect brain and cognition!
Condition: Obesity
Investigator: Faris Zuraikat, PhD
Status: Currently Recruiting
The purpose of this study is to assess energy balance during two different diet periods.
Condition: Obesity
Investigator: Rudolph Leibel, MD
Status: Currently Recruiting
The Physiology of the Weight Reduced State (POWERS) is a national research study designed to discover and learn what happens to the human body after weight loss and to learn why some people regain their lost weight. Understanding why this happens could help health professionals improve strategies for successful weight loss maintenance after weight loss.…
Condition: Obesity
Investigator: Judith Korner, MD
Status: Currently Recruiting
The purpose of this study is to evaluate if genetic variations are associated with the amount of weight loss with diet and while taking an FDA-approved medication for weight loss. The participation lasts ten months and includes six in-person visits at CUIMC with blood sampling and questionnaires, virtual nutritional counseling, and taking an oral weight…
Condition: Obesity
Investigator: Joshua Cook, MD, PhD
Status: Currently Recruiting
We are conducting a research study on how insulin controls blood sugar in both healthy people and those at risk of type 2 diabetes. We are seeking adult volunteers, aged 18-65, who have body mass indices either in the lean range (18-25 kg/m2) or in the obesity range (30-45 kg/m2) but who do not have prediabetes or diabetes. Participants will undergo a…
Condition: Obesity
Investigator: Joshua Cook, MD, PhD
Status: Currently Recruiting
We are recruiting volunteers, aged 18-70, for a research study on the buildup of excessive liver fat ("fatty liver disease") in people with or at risk for type 2 diabetes because their bodies are resistant to the actions of the blood sugar-lowering hormone, insulin. To do this, we seek to temporarily induce or accentuate insulin resistance in 14…
Condition: Obesity
Investigator: Joshua Cook, MD, PhD
Status: Currently Recruiting
We are seeking adult volunteers with body mass index in the obesity range (30-45 kg/m2) to come in for a single study visit where they answer some health questions and have a small volume of blood drawn (25 cc/1.7 tbsp). We will measure levels of the blood sugar-lowering hormone insulin as well as glucose (sugar), certain fats, and other molecules related…
Condition: Heart Disease / Peripheral Arterial Disease
Investigator: Sahil Parikh, MD
Status: Currently Recruiting
This study aims to collect information about the symptoms and treatments of patients who have severely clogged arteries and are treated with commercially available Boston Scientific Corporation drug-eluting devices marketed for the treatment of lesions located in the peripheral vasculature. Participation in the study is expected to last for up to two (2)…
Condition: Psychiatric Disorders / Anxiety
Investigator: Kate Fitzgerald, MD
Status: Closed
This research study seeks to better understand the biological and behavioral aspects of specific phobia and evaluate how the "Self-Distancing" technique might help youth confront their fears. The study will be conducted at Columbia University in Manhattan. Participation involves completing questionnaires and attending a single visit for a…
Condition: Obesity
Investigator: Joshua Cook, MD, PhD
Status: Closed
We're conducting a research study on how much insulin is needed to control blood sugar in people who are made temporarily resistant to insulin's effects. Insulin is the main hormone (chemical signal) that the body uses to lower the levels of sugar in the blood. We are interested in looking at insulin levels because we think that lowering insulin…
Condition: Heart Disease / Peripheral Arterial Disease
Investigator: Sanjum Sethi, MD, MPH
Status: Closed
This is a prospective, multi-center, observational, post-market study that will evaluate the safety and procedural success of performing trans-radial access for treatment of atherosclerotic lesions in the lower extremities. This research study will collect outcome data of patients undergoing percutaneous endovascular treatment of Peripheral Artery Disease (…
Condition: Psychiatric Disorders / Anxiety
Investigator: Amir Levine, MD
Status: Closed
Sertraline (also known as Zoloft) is an FDA approved medication that is used to treat anxiety in children and adolescents. We aim to better understand how children and adolescents with anxiety respond to sertraline and whether we can predict medication response. If your child is eligible, he or she can participate in a research study and will receive both a…
Condition: Psychiatric Disorders / Anxiety
Investigator: Franklin Schneier, MD
Status: Closed
We are currently enrolling individuals with social anxiety disorder to participate in this study. The purpose of this study is to assess whether a brief computer-based research treatment helps improve social anxiety symptoms. For eligible participants, this study will involve a brief, novel research treatment for social anxiety, delivered in 8 or 12…
Condition: Psychiatric Disorders / Anxiety
Investigator: Jonathan Posner, MD
Status: Closed
The goal of this study is to advance our understanding of how the brain processes emotion in adolescents. Adolescents with and without symptoms of anxiety are invited to participate. This study takes place over two days and includes an evaluation and a brain imaging session. Participants will be compensated up to $250. This study does not provide treatment.
Condition: Heart Disease / Peripheral Arterial Disease
Investigator: Sahil Parikh, MD
Status: Closed
The purpose of this study is to deterimine if the Drug-Coated Chocolate Touch Balloon Catheters is safe and effective compared to a drug-coated balloon that is already approved in patients with a blockage in the blood vessels of their leg.
Condition: Heart Disease / Peripheral Arterial Disease
Investigator: Sahil Parikh, MD
Status: Closed
This study is for patients who suffer from a condition where one of the blood vessels that deliver blood to your leg has a significant narrowing. This is called peripheral artery disease (PAD). The narrowing may be suitable for a treatment technique called balloon angioplasty. One of the therapies that has been used to treat PAD is balloon angioplasty. It…
Condition: Psychiatric Disorders / Anxiety
Investigator: Franklin Schneier, MD
Status: Closed
RESEARCH STUDY:Brief Intervention for Public Speaking Fears (IRB#7293).- Are you between the ages of 18 - 60?- Do you have bothersome fears of public speaking?- Are you interested in trying a novel intervention?This research study tests whether a brief intervention using a medication called propranolol is effective at reducing public speaking fears. This…
Condition: Heart Disease / Peripheral Arterial Disease
Investigator: Sahil Parikh, MD
Status: Closed
This study is to collect information about the symptoms and treatments of patient who have severely clogged arteries and to learn about their outcomes at one year. If you choose to be part of this research, we will ask you to be involved in five interviews with study staff. Each interview will take about 30 minutes of your time and we will contact you…
Condition: Heart Disease / Peripheral Arterial Disease
Investigator: Sahil Parikh, MD
Status: Closed
This study is to test if a combination drug/device therapy using TEMSIROLIMUS (Temsirolimus Injection), with or without the generic steroid DEXAMETHASONE (Dexamethasone Sodium Phosphate Injection), can be delivered safely into the tissue around the blood vessel wall at the time of an angioplasty ( which is a a procedure to open blocked arteries and restore…