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ClinicalTrials.gov 225 recruiting now early-phase tilt #2 of 28,963 conditions

Healthy: early-phase trial registry

225 of 1,096 indexed Healthy trials are currently recruiting, with more weight in Phase 1-2.

Corpus placement: #2 of 28,963 conditions by registered trial count.

1,096 US clinical trials · 225 currently recruiting · #2 of 28,963 conditions by registered trial count

Healthy: 1,096 US clinical trials tracked, 225 recruiting.

Healthy is the subject of 1,096 registered US clinical trials on ClinicalTrials.gov, 225 of them currently open to new participants. 43 are in Phase 3-4 (later-stage) and 546 in Phase 1-2 (earlier-stage). The most active sponsor is Eli Lilly and Company, running 55 of these trials.

Open enrollment, early-phase tilt

Healthy has 1,096 registered US clinical trials, 225 of them open to new participants right now, about 21% of the total.

225
recruiting participants now
21%
of trials open to enrollment
43
in Phase 3-4 (later-stage)
55
top sponsor: Eli Lilly and Company

Corpus placement: #2 of 28,963 conditions by registered trial count on ClinicalTrials.gov-derived indexes. Registry reference only, not medical advice.

Key findings

What ClinicalTrials.gov does not surface for Healthy on its own pages , computed from the registry mirror as of 2026-07-11. Each line carries its own denominator so it can be quoted as it stands.

  1. Healthy is recruiting below its size-band peers.

    225 of 1,096 indexed trials (20.5%) are open to enrollment, against a 37.2% average across 135 conditions with 100+ trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.

  2. Sponsorship of Healthy trials is spread across many organizations.

    Eli Lilly and Company accounts for 55 of 1,096 trials (5%). 429 distinct sponsors appear on at least one study for this condition label.

  3. Most Healthy trials plan to enrol fewer than 100 people.

    Median target enrolment is 40 among the 1,091 trials that report a genuine target (sentinel values excluded). 851 of those (78%) plan for fewer than 100 participants.

  4. Healthy research is mostly interventional.

    905 interventional and 191 observational studies make up this index (82.6% interventional). Study type is sponsor-reported on ClinicalTrials.gov.

Phase 1518Phase 228Phase 311Phase 432

Open and recent trials

1,096 total, page 7 of 22

ACTIVE NOT RECRUITING 12 participants

Analysis of Crepitus in Human Subjects

National University of Health Sciences

NCT05425017

ACTIVE NOT RECRUITING NA 12 participants

Mapping the Shift Worker's Microbiome

University of Pennsylvania

NCT03221517

ACTIVE NOT RECRUITING Phase 1 12 participants

A Study of MK-8527 in Healthy Lactating Female Participants (MK-8527-009)

Merck Sharp & Dohme

NCT06580587

ACTIVE NOT RECRUITING 10 participants

Palmitate Study: A Method Study of Dietary Lipid Oxidation in Toddlers

Arkansas Children's Hospital Research Institute

NCT04408833

COMPLETED 63,061 participants

A Study to Evaluate the Safety of FluMist in Healthy Children and Healthy Adults

MedImmune

NCT00113880

COMPLETED NA 41,862 participants

Evaluation of Chagas Blood Screening and Confirmatory Assays

Abbott Diagnostics Division

NCT00718042

COMPLETED NA 16,388 participants

Alinity s Anti-HCV II - Clinical Evaluation Protocol

Abbott Transfusion Medicine

NCT04862065

COMPLETED Phase 3 8,374 participants

Safety and Immunogenicity Study of the Hepatitis B Vaccine, HEPLISAV™, Compared to Engerix-B® Vaccine

Dynavax Technologies Corporation

NCT02117934

COMPLETED 6,000 participants

Socio-economic Status and Age-related Disability in a Biracial Community

National Institute of Environmental Health Sciences (NIEHS)

NCT00042133

COMPLETED 4,340 participants

BraveNet Integrative Medicine Descriptive Study

Duke University

NCT00636779

COMPLETED 3,000 participants

An Observational Study to Assess Respiratory Syncytial Virus (RSV) Respiratory Events Among Premature Infants

MedImmune

NCT00983606

COMPLETED NA 2,700 participants

Zinc Versus Multivitamin Micronutrient Supplementation in the Setting of COVID-19

Mayo Clinic

NCT04551339

COMPLETED 2,250 participants

Dose Response Relationship for Single Doses of Corticotropin Releasing Hormone (CRH) in Normal Volunteers and in Patients With Adrenal Insufficiency

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

NCT00001180

COMPLETED Phase 3 2,127 participants

MEDI-524 (Motavizumab) for the Prevention of Respiratory Sycytial Virus (RSV) Disease Among Native American Indian Infants in the Southwestern United States

MedImmune

NCT00121108

COMPLETED Phase 4 1,564 participants

Anthrax Vaccine Clinical Trial to Assess Dose Reduction and Route Change

Centers for Disease Control and Prevention

NCT00119067

COMPLETED 1,386 participants

Electrophysiology and Blood Flow in Patients With Schizophrenia and Their Siblings

National Institute of Mental Health (NIMH)

NCT00001921

COMPLETED NA 1,200 participants

Incentivizing Reflection and Output in Exercise

University of Pennsylvania

NCT03742778

COMPLETED 1,194 participants

The Effect of Positive and Negative Emotions on Brain Activity in Alcoholics and Nonalcoholics

National Institute on Alcohol Abuse and Alcoholism (NIAAA)

NCT00001675

COMPLETED Phase 1 1,191 participants

Communicating Multiple Disease Risks

Washington University School of Medicine

NCT02621671

COMPLETED Phase 1 974 participants

Study Assessing the Safety, Tolerability, Pharmacokinetics, and Immunogenicity of Repeated Subcutaneous Doses of Anti-Spike (S) SARS-CoV-2 Monoclonal Antibodies (REGN10933+REGN10987) in Adult Volunteers as Related to COVID-19

Regeneron Pharmaceuticals

NCT04519437

COMPLETED 968 participants

Genetic Studies of Tone Deafness

National Institute on Deafness and Other Communication Disorders (NIDCD)

NCT00006076

COMPLETED Phase 3 890 participants

Trial to Demonstrate Equivalent Immunogenicity of CAIV-T and FLUMIST in Healthy Participants

MedImmune

NCT00192335

COMPLETED 836 participants

EQUIC-SM: Enhancing Quality of Informed Consent

US Department of Veterans Affairs

NCT00032565

COMPLETED 834 participants

Cross-sectional Survey of Omega-3 Fatty Acid Blood Levels

dsm-firmenich Switzerland

NCT02883764

COMPLETED Phase 2 800 participants

Influence of Genetics in Pain Sensitivity

National Institute of Dental and Craniofacial Research (NIDCR)

NCT00001956

COMPLETED 694 participants

Ezra Faster Scan Study

Ezra AI

NCT05385718

COMPLETED 610 participants

Magnetic Resonance Imaging Studies of Motor and Thought Processes

National Institute of Neurological Disorders and Stroke (NINDS)

NCT00001361

COMPLETED 600 participants

Screening Study for the Department of Rehabilitation Medicine

National Institutes of Health Clinical Center (CC)

NCT00023088

COMPLETED NA 583 participants

The Effect of Probiotics (L. Helveticus, B. Longum, and B. Bifidum) on Immune Function and Digestive Health

University of Florida

NCT01709825

COMPLETED 504 participants

Topcon 3D OCT-1 Maestro Reference Database Study II

Topcon Medical Systems

NCT02447120

COMPLETED 500 participants

Blood Sampling for Neurochemical and Genetic Testing

National Institute of Neurological Disorders and Stroke (NINDS)

NCT00001147

COMPLETED Phase 2 459 participants

A Study to Evaluate a Range of Dose Levels of an Adenovirus Serotype 26 (Ad26.RSV.preF)-Based Vaccine in Older Adults

Janssen Vaccines & Prevention B.V.

NCT04453202

COMPLETED 458 participants

Screening of Healthy Adults for Genetic Variations That Control Fatty Acid Processing

Wake Forest University Health Sciences

NCT01516125

COMPLETED NA 447 participants

Spot-Check Noninvasive Hemoglobin (SpHb) Clinical Validation

Masimo Corporation

NCT02930850

COMPLETED 430 participants

Shape Up! Kids Study

University of Hawaii

NCT03706612

COMPLETED NA 427 participants

Galactooligosaccharide, Immune Strength, and Digestive Health

University of Florida

NCT01137760

COMPLETED 400 participants

Identification of Genes Associated With Lung Disease in Patients With Rheumatoid Arthritis

National Heart, Lung, and Blood Institute (NHLBI)

NCT00001885

COMPLETED 400 participants

Technical Evaluation of Cardiovascular Magnetic Resonance Imaging and Spectroscopy

National Heart, Lung, and Blood Institute (NHLBI)

NCT00001874

COMPLETED Phase 4 398 participants

Aminotransferase Trends During Prolonged Acetaminophen Dosing

Denver Health and Hospital Authority

NCT00743093

COMPLETED 397 participants

Neural Mechanisms of Cost and Benefit Integration During Decision-Making, Aim 2: Acute & Lifetime Stress

NYU Langone Health

NCT04060966

COMPLETED 396 participants

Genomic Tools for Studying the Ecology of the Human Vaginal Microflora

Emory University

NCT00576797

COMPLETED NA 360 participants

A Study of the Effects of Probiotics in Children Grades 1-3

Procter and Gamble

NCT00635388

COMPLETED 346 participants

Use of Virtual Reality to Communicate Concepts of Genomics to the General Public

National Human Genome Research Institute (NHGRI)

NCT00316056

COMPLETED 336 participants

Audio Data Collection for Identification and Classification of Coughing

HealthMode

NCT04326309

COMPLETED 320 participants

Fetal Programming of Obesity

Arkansas Children's Hospital Research Institute

NCT01131117

COMPLETED Phase 4 301 participants

Study to Evaluate the Safety of 1 New 6:2 Influenza Virus Reassortant in Adults for the 2016-2017 Season

MedImmune

NCT02743117

COMPLETED Phase 4 301 participants

Study to Evaluate the Safety of 3 New 6:2 Influenza Virus Reassortants in Adults for the 2015-2016 Season

MedImmune

NCT02473510

COMPLETED 300 participants

Adolescence, Puberty, and Emotion Regulation

National Institute of Mental Health (NIMH)

NCT00016731

COMPLETED Phase 1 300 participants

A Study to Assess the Bioequivalence of Ustekinumab by Two Different Injection Devices in Healthy Participants

Janssen Research & Development

NCT04816513

COMPLETED Phase 4 300 participants

Study to Evaluate the Safety of 1 New 6:2 Influenza Virus Reassortant in Adults for the 2017-2018 Season

MedImmune

NCT03158038

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Phase Distribution

PhaseTrial count
Phase 1 518
Phase 2 28
Phase 3 11
Phase 4 32

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

What is open for Healthy right now

225 recruiting of 1,096 indexed (21% open).

Phase mix: 43 late (III/IV) vs 546 early (I/II) (early-phase heavy).

Top sponsor: Eli Lilly and Company (55 trials), 9 others listed. 50 shown below, recruiting first. #2 of 28,963 conditions by registered trial count.

How open-enrollment share is computed

Open share is recruiting_count divided by trial_count for this condition label in the public registry export. Status can change between pulls; treat the figure as a snapshot of research attention, not treatment availability.

Frequently Asked Questions

How many clinical trials are there for Healthy?

PlainTrial tracks 1,096 US clinical trials for Healthy, of which 225 are currently recruiting participants. Data sourced from ClinicalTrials.gov.

How do I find a recruiting trial for Healthy?

Use the trial list above filtered by "Recruiting" status, or visit our trial finder at /recruiting to search by condition and state. Always discuss trial participation with your healthcare provider before enrolling.

Is this data current?

Data is sourced from ClinicalTrials.gov and reflects our most recent data pull. Trial status may have changed since then. Always verify current information at ClinicalTrials.gov before making decisions about participation.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from ClinicalTrials.gov (National Library of Medicine). Consult a qualified professional before making decisions based on this data.

Source: ClinicalTrials.gov (NIH/NLM) ClinicalTrials.gov AACT registry · 2026 Trial counts and statuses sourced from ClinicalTrials.gov. Sponsor counts include both industry and federal/academic sponsors.

Verify with NIH →

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This page aggregates every registered trial for this condition, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.