Reviewed by MD. Catarina Costa, Internal Medicine · Medical Advisor at Octo HealthWe have spent thousands of hours across cardiovascular research, clinical literature, and the gap between what standard panels measure and what the evidence actually tracks. This is the distilled version: the markers that actually matter, the context your standard lipid panel never comes with, and the evidence-backed changes that move the needle.
Start here: three free things you can do today
- Walk 10 to 15 minutes after your evening meal. It lowers postprandial triglycerides and blood pressure, and it is the easiest cardiovascular habit to start today.
- Take two blood pressure readings at home after 5 minutes of seated rest. Clinic readings run 10 to 15 mmHg high from white coat effect. Your home baseline is more informative.
- Find your Zone 2 pace, the effort where you can still hold a full conversation. It is the aerobic base that lowers resting heart rate and builds cardiorespiratory fitness over time.
A few minutes a day, at no cost. The full 90-day plan below turns these into a routine you can keep.
Source: CDC
Why this matters
Cardiovascular disease remains the leading cause of death in the developed world. The paradox is that most of the risk is visible in blood years before any clinical event. The problem is not a lack of technology. It is a gap between what the research measures and what standard care routinely orders.
A standard lipid panel measures LDL cholesterol. But LDL-C is a concentration, not a particle count. Take two people with identical LDL-C of 110 mg/dL: one has large, cholesterol-rich particles and an ApoB of 72, the other has small, dense particles and an ApoB of 118. Same LDL number. Very different risk profiles. Standard panels measure the weight of cholesterol cargo. ApoB counts the number of trucks carrying it. A truck carrying a small amount of cholesterol is still a truck that can crash into an arterial wall. Most people have never had ApoB measured.
The markers that matter
ApoBOptimal below 60 mg/dL (high-risk) to below 80 mg/dL (general) · Standard below 100 mg/dL
In plain English. Apolipoprotein B, a direct count of every atherogenic particle that can enter the arterial wall.
Apolipoprotein B is the protein that sits on the surface of every atherogenic lipoprotein: LDL, VLDL, IDL, and Lp(a). One particle carries exactly one ApoB molecule, so ApoB is a direct count of every particle capable of entering the arterial wall and initiating atherosclerosis. LDL-C, by contrast, measures only the cholesterol carried inside LDL particles. Two people can have identical LDL-C and carry profoundly different ApoB burdens depending on whether their particles are large and cholesterol-rich or small and dense. Mendelian randomization studies provide some of the strongest causal evidence in all of cardiovascular medicine that ApoB-containing lipoproteins drive atherosclerotic disease. Most people have never had it measured.
In emergency medicine I see the downstream end of cardiovascular disease, the acute presentations that took decades to develop. What I rarely see in those patients' histories is an ApoB measurement taken when there was still time to act on it. The standard lipid panel was developed for population screening, not individual risk stratification. The technology to measure ApoB has been available for 40 years. The practice has not caught up.
MD. Catarina Costa, Medical Advisor
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