Clinical trials · California
Health clinical trials in California
We’re tracking 341 recruiting health studies with a site in California — including Phase 2 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT05279729Recruiting
Mobile app coaching for people with diabetes
This study tests whether using a smartphone app can help people with type 2 diabetes manage their health. It focuses especially on low-income Hispanic/Latinx adults who regularly check blood sugar.
San Diego, CaliforniaAges 18–64 - NCT05701657Recruiting
Food and lifestyle study using your health and DNA data
This study tests whether changing diet and tracking health habits can help personalize nutrition using your DNA and health information. You would follow a structured diet for about 10–12 weeks and possibly spend short stays where you eat only study-provided foods.
Davis, CaliforniaAges 18 years+ - NCT05956756Recruiting
Resilience training for occupational therapy students
This trial offers a resilience (stress-coping) program to occupational therapy students. It may help improve how students handle stress during their training.
Loma Linda, CaliforniaAges 18–65 - NCT05978128Recruiting
Use advocates to boost lung cancer screening
This trial tests whether trained advocates and supporters can help people who are eligible for lung cancer screening actually get screened. It may help you (and others) by making screening easier to plan and complete.
Los Angeles, CaliforniaAges 40–80 - NCT06090578Recruiting
Brain health check for adults in primary care
This trial tests a new brain health assessment tool in primary care clinics. It may help your doctor better detect thinking or memory changes early.
Pasadena, CaliforniaAges 18 years+ - NCT06150196Recruiting
Brain health classes for veterans with TBI
This trial tests whether brain health and wellness classes can help veterans who have had multiple mild traumatic brain injuries and also have PTSD. The classes aim to improve cognitive symptoms like memory and attention.
Martinez, CaliforniaAges 18–75 - NCT06207110Recruiting
Family support program for children with high food responsiveness
This study tests a program for families with children ages 7–12 who have overweight or obesity and often feel strong urges to eat. The program helps parents support their child in eating healthier and being more active.
La Jolla, CaliforniaAges 7–12 - NCT06374238Recruiting
Peer Support for Young People with Sickle Cell Pain
This study is testing a peer support program for teens and young adults (ages 16–30) with sickle cell disease who have chronic pain. You'll connect with a trained peer supporter through your smartphone to learn pain coping skills and get support.
Los Angeles, CaliforniaAges 16–30 - NCT06427954Recruiting
Mobile app study for people with advanced lung cancer
This study tests a mobile app (called THRIVE) to help people with advanced lung cancer manage their health and well-being. You'll use the app on your phone to track symptoms and get support, which may help you feel better and stay more in control.
Los Angeles, CaliforniaAges 18 years+ - NCT06456372Recruiting
App for kids with ADHD
This study tests a smartphone app designed to help children with ADHD manage their symptoms. Researchers want to see if using the app can improve focus and daily functioning.
Riverside, CaliforniaAges 8–12 - NCT06568016Recruiting
Helping patients get colonoscopy after abnormal stool test
This study tests a new clinic program to help patients complete a colonoscopy if they received an abnormal result from a fecal immunochemical test (FIT), a simple stool test for colon cancer. It focuses on community health centers and aims to make follow-up care easier.
Los Angeles, CaliforniaAges Any age - NCT06664034Recruiting
Health support for young rural women cancer survivors
This study offers a program to help young women in rural Imperial County, California, who have had cancer, improve their health after treatment. It provides support for their overall well-being.
Brawley, CaliforniaAges 15–50 - NCT06874790Recruiting
Web-based mental health app study for Latina women
This study tests a web-based app to help Latina women in Los Angeles or Orange County who are feeling anxious or depressed. If you are not currently in therapy or on medication, you may be able to join from home using your smartphone or computer.
Los Angeles, CaliforniaAges 18 years+ - NCT07186192RecruitingPhase 3
Digital health app for CAR-T therapy self-management
This study tests a digital health app to help you manage symptoms and stay connected with your care team while receiving CAR-T therapy as an outpatient. It's designed for people with blood cancers who have a caregiver living with them.
Duarte, CaliforniaAges 18 years+ - NCT07202247RecruitingPhase 2
Improving heart health in prostate cancer patients on hormone therapy
This study tests whether combining a time-restricted eating plan, a heart-healthy diet, and a weight-loss medication (GLP-1 receptor agonist) can help improve heart health and weight in men with prostate cancer who are receiving hormone therapy. It aims to reduce the risk of heart problems caused by hormone treatment.
Duarte, CaliforniaAges 30–79 - NCT07213908Recruiting
Comparing two school sleep programs for teens
This study compares two different sleep programs offered in schools to help teens sleep better. It looks at which one works best for improving sleep quality in youth with sleep problems.
Los Angeles, CaliforniaAges 12–18 - NCT07219095Recruiting
Dance Mental Health App for Injured Teens
This trial tests a mental health app (SuperBetter) for teens who dance and have a leg injury. It aims to help them cope and stay positive while recovering.
San Diego, CaliforniaAges 13–18 - NCT07290361Recruiting
Physical therapy for spine pain in primary care
This trial tests a program that connects people with spine pain (neck or back pain) from their primary care clinic to a physical therapist. The goal is to see if this approach helps patients get more timely and effective care.
San Diego, CaliforniaAges 18 years+ - NCT07418775Recruiting
Meningioma Study: Genes, Health & Life
This study looks at how your tumor's genes, personal health habits, and other factors affect your long-term health after a meningioma diagnosis. You'll be asked to complete surveys about your health and experiences—no new treatments or procedures are involved.
San Francisco, CaliforniaAges 18 years+ - NCT07477184Recruiting
Sleep app study for California firefighters
This trial tests a smartphone app designed to help firefighters sleep better, think more clearly, and feel better overall. You might join to improve your sleep and health through a simple program on your iPhone or iPad.
San Luis Obispo, CaliforniaAges 18 years+ - NCT07500545Recruiting
Heat health study for Lake County adults
This study tests a program to help people stay safe during extreme heat. If you live in Lake County, you may be able to join and learn ways to cope with heat.
Lakeport, CaliforniaAges 18 years+ - NCT07524270Recruiting
Testing a supplement for period pain and PMS symptoms
This study tests a product called Effera to see if it helps reduce menstrual cramps, pain, and premenstrual symptoms like mood changes and bloating. You'll track your symptoms and complete online surveys over several weeks.
San Francisco, CaliforniaAges 18–40 - NCT07591584Recruiting
Digestive Enzyme Blend for Bloating and Gas Relief
This study tests whether a daily digestive enzyme supplement designed to break down certain hard-to-digest foods can reduce bloating and belly pain. You'll use a smartphone app to track your symptoms over several weeks to see if the enzyme helps.
Los Angeles, CaliforniaAges 18 years+ - NCT06067763Enrolling by invitation
Project Health: Preventing unhealthy weight gain in young adults
This study tests a program to help young adults improve their eating and exercise habits, with the goal of preventing obesity. It is designed for people who are concerned about their weight and want to make healthier lifestyle choices.
Stanford, CaliforniaAges 17–20
Where these studies are running in California
Institutions with a site for the recruiting health studies listed above.
- University of California, Los Angeles (UCLA) · 4 studies
- City of Hope Comprehensive Cancer Center · 2 studies
- UCLA / Jonsson Comprehensive Cancer Center · 2 studies
- Alethios, Inc.
- Big Valley Rancheria
- California Polytechnic State University
- Cancer Resource Center of the Desert
- Cedars-Sinai Medical Center
What taking part in a health study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
Common questions
- Are there health clinical trials in California?
- Yes. We're currently tracking 341 recruiting health studies with a site in California, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a health study in California?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Do I have to live in California to take part?
- Not necessarily. These studies have a site in California, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a health trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New health studies open in California regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.