Heart disease is the leading cause of death in the U.S. A new review from one of the world’s most respected medical institutions asks whether CBD might play a role in protecting the cardiovascular system.
The Heart of the Matter
Heart disease kills more Americans than any other cause – more than all cancers combined. Despite remarkable advances in cardiac medicine, inflammation, fibrosis, and arrhythmias remain difficult to manage long-term without significant side effects from existing medications.
CBD, long studied for its effects on anxiety, sleep, and pain, is now being examined through a cardiac lens. A comprehensive review published in Mayo Clinic Proceedings (2025) asks a targeted question: What does the current science say about CBD’s potential role in cardiovascular health?
What the Review Found
The research team – led by Hesham M. Abdalla, MBBS, a resident in Internal Medicine at Mayo Clinic in Scottsdale, Arizona – conducted a thorough analysis of CBD’s mechanisms and the existing preclinical and emerging clinical evidence across multiple cardiovascular conditions.
Key findings from the review include:
- Ischemia-reperfusion injury – CBD showed potential in preclinical models for reducing the cellular damage that occurs when blood flow is restored to the heart after a blockage
- Myocardial fibrosis – CBD demonstrated properties that may help moderate the scarring of heart tissue, a driver of long-term heart failure
- Cardiac arrhythmias – CBD’s interaction with ion channels suggests a potential role in stabilizing irregular heart rhythms
- Pericarditis and myocarditis – preliminary trials showed CBD’s potential as a non-immunosuppressive therapy for these inflammatory heart conditions, which currently have limited treatment options
The Credibility of the Source
The significance of a publication in Mayo Clinic Proceedings cannot be overstated. It is one of the most widely read and respected medical journals in the world. When Mayo Clinic researchers take a topic seriously enough to review it in their flagship journal, the broader medical community takes note.
As Dr. Abdalla noted in his accompanying video presentation, Mayo Clinic has been actively engaged in exploring CBD as a “potential non-immunosuppressive option” for certain cardiac patients – a statement that would have been unthinkable a decade ago.
Important Context
The review is careful to note that clinical application of CBD for cardiovascular conditions is still in early stages. Human clinical trials remain limited, doses have not been standardized, and important safety and regulatory questions remain.
However, this is exactly how evidence-based medicine is supposed to work. Large bodies of preclinical evidence prompt focused clinical trials, which generate the data needed for treatment guidelines. CBD is advancing through that pipeline – and the Mayo Clinic is paying attention.
Practical Takeaways
- CBD’s most well-documented cardiovascular mechanism is anti-inflammation, and since inflammation is a root driver of most heart disease, this is a meaningful connection
- People already managing cardiovascular conditions with medication should be aware that CBD can interact with blood thinners (like warfarin) and some other cardiac drugs – always consult your cardiologist
- Stress reduction through CBD may also benefit the heart indirectly – chronic psychological stress is a documented risk factor for cardiac events
About the Original Study
Title: Cannabidiol in Cardiovascular Disease: A Review of Current Evidence and Future Directions Year: 2025 (published online Dec. 28, 2025) Journal: Mayo Clinic Proceedings DOI: 10.1016/j.mayocp.2025.09.016 PubMed: https://pubmed.ncbi.nlm.nih.gov/41467868/
Authors – Mayo Clinic / Mayo Clinic Scottsdale:
- Hesham M. Abdalla, MBBS – Internal Medicine Resident, Mayo Clinic Scottsdale
- Adam Bacon – Mayo Clinic
- Hunter VanDolah – Mayo Clinic
- Luke Dreher – Mayo Clinic
- Girish Pathangey – Mayo Clinic Scottsdale
- Mahmoud Abdelnabi – Mayo Clinic Scottsdale
- Ramzi Ibrahim – Mayo Clinic Scottsdale
- Milagros Pereyra – Mayo Clinic Scottsdale
- Juan M. Farina – Mayo Clinic Scottsdale
- S. Allen Luis – Mayo Clinic
- Reza Arsanjani – Mayo Clinic Scottsdale
- Chadi Ayoub – Mayo Clinic
Contributing Expert
Alan first discovered CBD while recovering from a sports injury — and he’s been a believer ever since. Over the years, he’s used CBD for sleep, skincare, easing anxiety, and even helping his family pet stay calm. With more than 20 years of experience running a marketing business, Alan now enjoys sharing scientific studies and personal experience with customers at Flourish + Live Well.