Abstract
Modern clinical practice frequently relies on superficial morphology metrics and standard glycemic markers to assume a state of cardiovascular safety. This paper attempts to expose the clinical danger of evaluating a patient’s vascular risk without accounting for absolute atherogenic particle burden, particularly in the context of carbohydrate-restricted or ketogenic diets. Here, we share an example case of a lean, fit endurance athlete presenting with optimal systemic metabolic markers, including a normal HbA1c, low high-sensitivity C-reactive protein (hs-CRP), and low fasting insulin. Despite his otherwise pristine metabolic profile, advanced precision lipidomics unmasked a discordantly high Apolipoprotein B (ApoB) and a low-density lipoprotein cholesterol (LDL-C) burden. Subsequent advanced imaging revealed extensive, volatile soft plaque throughout the left anterior descending (LAD) artery. This case highlights the critical clinical necessity of separating metabolic health from lipid-mediated atherogenic risk, demonstrating that a subset of lean patients can experience aggressive macrovascular disease despite optimized metabolic parameters. This paper outlines an advanced, actionable diagnostic framework to guide clinicians past superficial phenotypes and accurately identify hidden cardiovascular and metabolic risk.
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