Kamal Ghorui
For years, most of us have been taught to think about heart health in silos. Cholesterol here, blood pressure there, and maybe a statin if things crossed some magic number. But the body doesn’t work that way. Your heart is not independent of your kidneys, your metabolism, your weight, or your blood sugar. They are all part of the same system, constantly influencing each other. Recent updates from the American Heart Association (AHA) and American College of Cardiology (ACC) are finally starting to reflect this reality. And together, they offer a more honest and actionable picture of heart health than anything we’ve had before. This is the topic for my blog post #68
I have drawn on three major guidelines that, taken together, give us the most complete picture of heart health we’ve ever had:
- 2022 AHA Life’s Essential 8 Advisory
- 2023 AHA Cardiovascular-Kidney-Metabolic (CKM) Health Advisory
- 2026 ACC/AHA Guideline on the Management of Dyslipidemia
Where sections go beyond these guidelines and reflect my own perspective, that is clearly highlighted.
About this series
Given the amount of material to be covered, I have divided this into a four-part series covered over 4 weeks, to make it easier to consume. Each part is designed to stand alone, but they build on each other. So if you read them in order, you’ll come away with a complete, practical picture of where heart health science stands today.
Week 1 (today’s post) — What has changed: A new framework called Cardiovascular-Kidney-Metabolic (CKM) syndrome explains why cholesterol, blood pressure, and blood sugar are one connected system. We also cover the new PREVENT risk calculator, and the three-step decision framework your doctor should now be using.
Week 2 — What you should actually be measuring: Apart from standard cholesterol tests, other markers like non-HDL cholesterol, ApoB, and Lp(a) along with factors like pregnancy history, inflammation markers, and ancestry can quietly push your risk higher without showing up in a standard panel.
Week 3 — What to eat, how to move, and what to skip: What the guidelines actually say, specifically and not vaguely, about diet, exercise, weight, sleep, and supplements, including a clear answer on which “heart health” products don’t work.
Week 4 — Medication, the calcium scan, and who needs what: When lifestyle alone isn’t enough, understand the step-by-step approach to medication, the coronary calcium scan and how to read your score, the groups who qualify for treatment regardless of their calculated risk, and a practical checklist to bring to your next doctor’s appointment.
Your heart is part of a bigger system
The 2023 AHA Advisory introduced a concept called Cardiovascular-Kidney-Metabolic syndrome, or CKM. The name sounds clinical, but the idea is simple: problems with your metabolism (blood sugar, weight, fat distribution), your kidneys, and your heart don’t happen in isolation. They feed each other and they often start from the same root causes. This is a move in the right direction by breaking down the silos.
Nobody became diabetic, or developed kidney or heart disease overnight. It started quietly, years or even decades earlier: a little extra belly fat, blood sugar creeping up, early stress on the kidneys that doesn’t show up on routine tests, cholesterol levels inching up every year but staying below the threshold of 130 mg/dL. By the time something dramatic happens, the healthcare system is in therapeutic mode rather than prevention mode.
The advisory describes this progression in four stages (shown in the figure below):
Stage 0 — No risk factors: You’re starting with a clean slate. The focus here is staying this way through good habits.
Stage 1 — Early warning signs: excess body fat, particularly around the belly, or early blood sugar issues. Nothing has gone wrong yet, but the direction matters. Weight loss of even 5% can meaningfully change the trajectory.
Stage 2 — More established problems: high blood pressure, type 2 pre-diabetes, abnormal cholesterol or triglycerides, or early kidney dysfunction. This is where most middle-aged adults find themselves. Lifestyle changes are essential here, and medication is often appropriate alongside them.
Stage 3 — Early disease: silent damage has begun even if you feel completely fine. Tests reveal early plaque in the arteries, high predicted cardiovascular risk, or significant kidney disease. This is the stage where a Coronary Artery Calcium scan (more on this later) becomes particularly useful.
Stage 4 — Clinical disease: heart attack, stroke, or heart failure. Here the goal shifts, as mentioned above, from prevention to management.
The most important takeaway: Stages 1, 2 and even 3 are where you can still change the outcome. The advisory notes that the right interventions at these stages can actually reverse progression to an earlier stage. By Stage 4, the conversation is very different.
The 2026 dyslipidemia guideline reinforces this; it lists CKM syndrome (the heart–kidney–metabolic connection) as an official risk factor that should prompt more aggressive cholesterol management, even when a standard risk calculator might not flag you for treatment.
A smarter cardiovascular risk calculator
The old calculator had real limitations. It was built on data from decades ago. It didn’t account for kidney health or body weight. The 2026 guideline replaces it with the new and more accurate PREVENT calculator. The improvements include:
- It applies from age 30, not 40 as before, because risk accumulates across your whole adult life
- It factors in kidney function (a major driver of long-term heart risk)
- It factors in BMI (body weight relative to height)
- It may produce lower risk estimates for the same person because the older tool sometimes overestimated risk, while the new one is better calibrated to current population data.
You can calculate your own 10-year risk using the official tool here: https://professional.heart.org/en/guidelines-and-statements/prevent-calculator
Based on your result, the 2026 guideline places you in one of four categories:
One thing worth knowing: because the PREVENT calculator is more accurate, it produces lower risk estimates than the old tool. To account for this, the 2026 guidelines have lowered the treatment thresholds. A 5% PREVENT risk now carries the same clinical weight that 7.5% used to—it is the new ‘Intermediate’ bar where a statin is generally recommended. Similarly, the ‘High Risk’ bar has moved from 20% down to 10%. The bar hasn’t actually moved; the ruler has just become more precise.
How your doctor should be thinking about your risk
The 2026 guideline introduces a simple three-step framework, nicknamed the CPR framework, for how cardiovascular risk should be assessed in people without existing heart disease:
C — Calculate your 10-year risk with the PREVENT calculator
P — Personalize by considering factors the calculator doesn’t capture, like family history, certain blood markers, or ancestry
R — Reclassify using a Coronary Artery Calcium scan if the decision is still unclear
If this isn’t part of your discussion with your doctor, it’s worth asking about it. You can do the C part yourself using the calculator above. We’ll cover the Personalize and Reclassify steps in detail in the upcoming parts over the next couple of weeks.
The bottom line from Part 1
Heart disease doesn’t come out of nowhere. It builds slowly through a system involving your metabolism, kidneys, and heart, and the earlier you understand where you are in that system, the more power you have to change it.
The new risk calculator is more accurate, starts earlier, and works for everyone regardless of race. And the three-step CPR framework gives you a clear path for turning that number into a decision.
In Part 2, we’ll get into what you should actually be measuring, beyond standard cholesterol, and the specific factors that can push you into a higher risk category without ever showing up in a routine blood test.
As always, I welcome your thoughts and would love to hear your experiences in the comments.
Nickhil Jakatdar is the CEO of GenePath Diagnostics and the founder of PreventiveHealth.ai, working to make advanced diagnostics and credible health guidance more accessible, affordable, and actionable. A PhD in EECS from UC Berkeley and the youngest recipient of the UC Berkeley Distinguished Alumnus Award, he has founded and led multiple tech companies. He holds 60 patents, and serves on several academic, healthcare, and innovation boards. To follow his thinking on preventive health, technology, and systems that scale expertise, join his private WhatsApp community and subscribe to his Substack.
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