235 Studies Now Enrolling
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Displaying 201 - 219 of 219
Condition: Healthy Volunteers
Investigator: Moise Desvarieux, MD, PhD
Status: Closed
We are looking for people ages 65 and older to help us evaluate if an investigational drug improves muscle function, which can reduce risk of falls and fractures. To be considered for the study, you: 1. Must complete a pre-screening phone interview to assess your eligibility 2. If you are eligible, you will be invited to attend an in-person appointment at…
Condition: Healthy Volunteers
Investigator: Magdalena Sobieszczyk, Md
Status: Closed
We are working on a new HIV vaccine study that builds on past success and other ongoing studies. This new study is called HVTN 120 and is testing a vaccine for HIV prevention. The Thai Trial has been the only study where the vaccines were partially protective in preventing HIV. We learned a lot from that study, and are now improving on next generation of…
Condition: Healthy Volunteers / Exercise
Investigator: Richard Sloan, PhD
Status: Closed
This study focuses on the effects of aerobic conditioning on cognition and brain activity. Eligible participants will complete an exercise stress test, MRI, and cognitive testing session at the beginning and end of the study. Once participants complete the first set of appointments, they will be randomly assigned to one of two conditions for 12-weeks.…
Condition: Healthy Volunteers
Investigator: Carolyn Westhoff, MD
Status: Closed
Tired of having to remember to take your birth control? If you are a woman between the ages of 18 and 35, are pre-menopausal, sexually active and do NOT wish to become pregnant, you are invited to see if you may qualify for a research study. The purpose of this research study is to test the effectiveness of an investigational contraceptive vaginal ring. If…
Condition: Infectious Disease / HIV
Investigator: Rebecca Schnall, PhD, RN
Status: Closed
For People Living With HIV (PLWH) with HIV-Associated Non-AIDS (HANA) conditions such as cardiovascular disease or diabetes, the situation is complex given the added burden of coping with a secondary chronic illness and potential effects on treatment. How sex/gender differences in HIV symptom interpretation and management influence treatment success has not…
Condition: Healthy Volunteers
Investigator: Richard Sloan, PhD
Status: Closed
The purpose of this research study is to determine whether ambulatory monitoring of blood pressure measured by a finger touch blood pressure monitor is a viable approach to measuring blood pressure in the field. A secondary aim is to determine whether the finger touch blood pressure monitor is influenced by individual differences in current stress levels…
Condition: Healthy Volunteers
Investigator: Richard Sloan, PhD
Status: Closed
The purpose of this study is to examine the effect of dietary flavanols on brain activity and memory. Flavanols represent a specific group of plant derived nutrients that are found in cocoa beans, grapes, tea, berries and various other fruits and vegetables. The specific flavanols investigated in this study come from cocoa. Participants will be asked to…
Condition: Healthy Volunteers
Investigator: Paula Castano, MD, MPH
Status: Closed
Do You Have a Mirena IUD? You may qualify for a study on the extended use of the Mirena IUD! You may qualify if you are 18 to 33 years old and had your Mirena placed in 2013. Compensation available for time and effort. Find out if you qualify!
Condition: Infectious Disease / HIV
Investigator: Jennifer Elliott, PhD
Status: Closed
NOTE: YOU MUST HAVE HIV AND HAVE EVER HAD HEPATITIS C TO BE ELIGIBLE FOR THIS STUDY!! ............... For individuals who have both HIV and Hepatitis C virus (HCV), heavy drinking poses serious risks to their health. We do not yet know which interventions are effective at helping individuals with HIV and HCV drink less. The goal of the study is to compare…
Condition: Healthy Volunteers
Investigator: Marie-Pierre St-Onge, PhD
Status: Closed
The overall goal of this project is to determine whether short sleep duration is a risk factor for cardiovascular disease in women. We are currently looking for healthy, non-smoking women to participate in a sleep study. You must be willing to come to Columbia University Medical Center once a week for two 6-week periods and regularly sleep at least 7-9…
Condition: Healthy Volunteers
Investigator: Loren Gianini, PhD
Status: Closed
The goal of this study is to better understand why some people have managed to lose weight and keep it off while others have not. We are recruiting people who have lost weight and kept it off as well as healthy non-dieters with overweight or obesity who are not trying to lose weight. Study participation involves computer tasks, brain imaging, and eating a…
Condition: Healthy Volunteers
Investigator: Eldad Hod, MD
Status: Closed
One of the consequences of donating blood is iron deficiency. In this study, we will screen healthy frequent blood donors for iron deficiency. We will enroll iron deficient donors and randomize them to intravenous iron treatment or placebo in order to determine whether iron deficiency has any harmful effects on the blood supply and the donors themselves.
Condition: Healthy Volunteers
Investigator: Blandine Laferrere, MD, PhD
Status: Closed
This pilot study is designed to examine the effect of a novel type of lifestyle intervention, administered via a smartphone app, on weight loss and improvement of metabolic health in individuals with overweight and/or obesity. A mobile application will be used to document eating behavior through photos. In addition, participants will receive personalized…
Condition: Healthy Volunteers
Investigator: Karen Marder, MD, MPH
Status: Closed
This study is recruiting people who have a family history of a neurodegenerative diseases, such as Alzheimer's disease or other form of dementia including frontotemporal dementia and prion disease, who are interested in doing predictive genetic testing. Participants will complete questionnaires prior to testing and then 1 month and 6 months after…
Condition: Healthy Volunteers / Exercise
Investigator: Richard Sloan, PhD
Status: Closed
This study focuses on the effects of aerobic conditioning on cardiovascular function and inflammatory response. Eligible participants will complete an exercise stress test, laboratory visit, and cognitive testing session at three specific time points over the course of the study. Once the initial set of appointments is complete, participants are randomly…
Condition: Healthy Volunteers
Investigator: Jeffrey Miller, MD
Status: Closed
The purpose of this study is to use Positron Emission Tomography (PET) to identify changes in brain chemistry that may cause an episode of depression. This study will be carried out in approximately 30 subjects. PET is a technique that provides "pictures" of chemical connections in the brain by injecting and monitoring a radioactive substance. In…
Condition: Healthy Volunteers
Investigator: Julie Franks, PhD
Status: Closed
Almost 40,000 people get HIV in the U.S. each year and almost all infections occur via sexual contact, especially male-to-male contact. The number of new infections has decreased slightly each year; however, we need other HIV prevention tools, including an effective HIV vaccine, to better protect people from HIV infection. An HIV vaccine is the best long-…
Condition: Infectious Disease / HIV
Investigator: Magdalena Sobieszczyk, Md
Status: Closed
HVTN 108 is an HIV vaccine study for 18-50 year old and HIV-negative people. We would like the test vaccine to teach your immune system to defend against HIV in a manner that is safe and well-tolerated. We will ask that all participants prevent HIV as best as possible and reduce risk of getting HIV. We will ask you to come to the clinic 12 times over 12…
Condition: Healthy Volunteers
Investigator: Sharon Wardlaw, MD
Status: Closed
This 2-phase study aims to explore ways to predict who will respond well to the FDA approved weight loss drug lorcaserin and to understand the mechanisms that develop which limit drug efficacy. Subjects will be recruited for a 5-week crossover study (phase 1) with lorcaserin and placebo followed by treatment with lorcaserin for 24 weeks (phase 2). Phase 1…