Can you have heart disease with a zero calcium score? | Dr. Campbell Rogers | EP#426
Dr. Campbell Rogers explains that a zero calcium score indicates low cardiovascular risk but does not rule out coronary disease, as non-calcified plaque can exist undetected. He discusses the emerging role of AI-driven CT angiogram analysis for high-risk patients and those with any detectable coronary calcium, and argues that cardiology is moving toward treating actual plaque visualized on imaging rather than relying solely on biomarker numbers.
Summary
Dr. Rogers clarifies two distinct conclusions that patients often conflate regarding a zero calcium score. While a calcium score of zero does impart very low risk of heart attack, stent placement, or cardiac death based on large clinical studies, it does not mean the patient is free of coronary disease. Non-calcified plaque can exist in coronary arteries but remains invisible to calcium scoring, creating a potential gap in risk assessment.
Regarding the use of CT angiography with AI analysis, Rogers identifies several ideal candidate populations. The clearest indication is symptomatic patients without acute illness, which is Class 1A guideline recommendation. For asymptomatic patients, he identifies high-risk occupational groups (pilots, first responders) as potential candidates. More significantly, any patient with detectable coronary calcium—even scores as low as 5 to 10—has coronary disease and may benefit from detailed plaque assessment via CT angiography, particularly in the ambiguous middle range of calcium scores (1-300) where treatment guidelines show less clarity.
Rogers emphasizes an important clinical application: using imaging to improve medication adherence. Since conditions like high cholesterol and hypertension are abstract to patients who cannot feel or see them, showing patients their actual coronary plaque on imaging can motivate compliance with medical therapy and lifestyle modifications.
On the broader direction of cardiology, Rogers argues the field is moving toward personalized, imaging-based treatment rather than relying exclusively on biomarkers like apoB or LDL levels. He acknowledges significant individual variation—some people with elevated apoB develop disease while others do not—and suggests that direct visualization of plaque burden provides more actionable information. However, he emphasizes the need for continued clinical evidence to support this paradigm shift before compelling widespread adoption among patients, physicians, and guideline writers.
Key Insights
- A zero calcium score imparts very low cardiovascular risk based on large studies, but does not indicate the absence of coronary disease, as non-calcified plaque can exist undetected by calcium scoring
- Any detectable coronary calcium, even scores of 5 to 10, indicates the patient has coronary disease and may warrant detailed plaque assessment via CT angiography
- In the calcium score range of 1 to 300, there is substantial subjectivity in treatment guidelines about medical therapy intensity, whereas scores above 300-400 have more aggressive consensus recommendations
- Visualizing actual coronary plaque on imaging can improve patient medication adherence better than discussing abstract biomarker numbers, as patients cannot feel or see conditions like high cholesterol
- Cardiology is moving toward treating actual visualized plaque rather than relying solely on biomarkers, because individual variation exists where some people with elevated apoB develop disease while others do not
Topics
Transcript
[0:00] What would you say to the person who's had a coronary artery calcium score done and it was zero? And so they have been led to believe that means that they're a very low risk of cardiovascular disease and don't have atherosclerosis. Is that the case and is there a value in someone with a coronary artery calcium score of zero doing this AI-driven analysis of a CT angiogram? >> I would separate the two conclusions you [0:32] just posited. One is they have very low risk and the second is they don't have coronary disease cuz I'll answer those two differently as conclusions from a calcium score of zero. Calcium score of zero does impart very low risk.…
Full transcript available for MurmurCast members
Sign Up to AccessMore from The Proof with Simon Hill
Why Womb Development Determines Lifelong Health | Dr Federica Amati | EP#427
Dr. Federica Amati explains that 48 of 52 cell differentiations required to form an adult human are completed by birth, meaning all major tissues, organs, and biological blueprints are established in the womb. Prenatal nutrition, particularly protein intake, directly affects permanent organ structures like kidneys, which subsequently influences lifelong health outcomes such as hypertension risk.
Does Exercise Actually Help Postpartum Sleep? [Explained] | Dr. Margie Davenport
Exercise in the postpartum period reduces depression risk by 45% and improves sleep quality, though it doesn't increase sleep duration or reduce nighttime awakenings. Dr. Davenport recommends resuming or beginning physical activity within the first 12 weeks postpartum to support mental health during this vulnerable period.
Animal Protein vs Plant Protein: How Much Should You Eat For Healthy Aging? | Simon Hill
Simon Hill discusses two landmark Harvard studies on protein intake and healthy aging, revealing that higher plant protein consumption correlates with better health outcomes. He recommends shifting from the current 75% animal/25% plant protein ratio to a 50/50 split by incorporating more beans, lentils, and legumes without requiring an all-or-nothing dietary change.
Can You Get Enough Protein on a Plant Based Diet? What Actually Determines It | Simon Hill
Simon Hill discusses protein adequacy on plant-based diets, explaining that while protein isn't inherently problematic, the success depends on what animal products are replaced with. He emphasizes that swapping animal proteins for legumes and whole plant foods works well, but replacing them with fruits and vegetables alone risks under-consumption, and recommends multivitamins as insurance for those transitioning to plant-based eating.
What actually causes obesity? It's not just diet | Dr Mauricio Gonzalez| EP#424
Dr. Mauricio Gonzalez explains that while obesity stems from an environment mismatch, the issue is more complex than simple diet. Modern food culture intertwines with emotions, social experiences, and genetics, making it multifaceted, though GLP medications address one significant component of the problem.