NCT05931497 · Massachusetts General Hospital
Sauna for Long Covid
What this study is about
Research suggests that Whole Body Hyperthermia in a sauna-like environment can reduce symptoms related to post-acute sequelae of SARS-CoV-2 (PASC), or Long Covid. The investigators aim to study the feasibility and treatment effect of this procedure for patients experiencing Long Covid symptoms.
View original scientific description
Research suggests that Whole Body Hyperthermia in a sauna-like environment can reduce symptoms related to post-acute sequelae of SARS-CoV-2 (PASC), or Long Covid. The investigators aim to study the feasibility and treatment effect of this procedure for patients experiencing Long Covid symptoms.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- 18-65 years of age
- English language proficiency
- Ability to provide informed consent
- Ability to lie supine (on back) for 2 hours (required for sauna sessions)
- Must have had clinically suspected COVID-19 and a positive antibody test or a documented SARS-CoV-2 infection (a positive reverse transcription polymerase chain reaction test) at least 12 weeks prior to Screening (Note: clinician judgment can override lack of positive COVID test with clear Long Covid onset and presentation)
- The Patient Reported Outcome Measurement Information System Fatigue-Short Form v1.0 -Fatigue 7a (PROMIS F-SF43) raw score of 21 or greater at Screening (onset of fatigue confirmed post-infection as in other studies of PASC)
- Individuals of childbearing potential must use an acceptable form of birth control.
Exclusion criteria
- Fatigue for known reasons other than PASC (e.g. longstanding diagnosis of Chronic Fatigue Syndrome pre-dating Long Covid, low thyroid, multiple sclerosis, AIDS related fatigue, mononucleosis), as determined by clinical discretion of study investigators
- Known hypersensitivity to infrared heat exposure, significant history of heat stroke
- Breastfeeding, pregnancy or planned pregnancy during study
- Active suicidal intent
- History of bipolar disorder, psychotic disorders, eating disorders, obsessive compulsive disorder, and/or substance use or dependence (within the last year), as per the Mini-International Neuropsychiatric Interview (MINI)44
- Positive urine toxicology screen for illicit drug use
- Any serious unstable medical condition
- Inability to fit into the sauna device. Morbid obesity (BMI \> 40) and/or body shape that might increase the risk of cutaneous burning from the device (because of skin being too close to the heat).
- Back pain that would interfere with ability to lay on hard surface
- Using medication that might impact thermoregulatory capacity and cannot be held for an appropriate length (at least one half-life) as determined by clinician judgment prior to receiving WBH treatment
- Breast Implants
- Claustrophobia that would interfere with ability to remain in sauna
- Unsafe cardiac status as defined by abnormal ECG reading at screening visit or as determined by study doctor or subject's physician
- History of or current diagnosis of thrombosis or thrombophilia
- History of hemophilia
- History of febrile seizures or seizure disorders
- Any new treatments/medications for long-COVID that have started in the past 3 months
- A subject who in the opinion of the Principal Investigator would not be able to safely complete the study or would jeopardize study integrity.
Where
- Boston, Massachusetts
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Nov 13, 2025 · Source of record for eligibility and locations