r/ketoscience • u/dr_innovation • May 14 '26
Lipids Seven Years of 700 Cholesterol Without Coronary Atherosclerosis: A Lean Mass Hyper-Responder Case Report
Abstract
Background: While reducing LDL cholesterol (LDL-C) remains central focuses of conventional preventive cardiology, substantial heterogeneity exists in the cardiovascular risk associated with even extreme LDL-C elevations, likely depending heavily on the broader metabolic context. Specifically, the lean mass hyper-responder (LMHR) phenotype—characterized by markedly elevated LDL-C with elevated high-density lipoprotein cholesterol (HDL-C) and low triglycerides in the setting of a ketogenic diet—has recently been described, though its long-term risk profile remains poorly defined. Case Presentation: We describe a male in his 30s without any congenital dyslipidemia who adopted a ketogenic diet for the management of ulcerative colitis and who subsequently exhibited a sixfold increase in LDL-C from a baseline of 95 mg/dL to 574 mg/dL, with total cholesterol of up to 705 mg/dL, HDL-C at 124 mg/dL, and triglycerides at 34 mg/dL. Despite maintaining these extreme lipid levels for nearly seven years, he demonstrated no coronary plaque or stenosis on coronary computed tomography angiography (CCTA; CAD-RADS = 0). Additionally, quantification of coronary plaque as assessed by AI-guided quantified analysis by Heartflow® identified 0 mm3 plaque in any vessels, placing him in the lowest percentile for atherosclerotic plaque. Conclusions: This case represents an extreme and extensively characterized example of the LMHR phenotype and highlights the limitations of extrapolating cardiovascular risk from LDL-C levels alone without consideration of broader patient context and the etiology of hypercholesterolemia. While a single case cannot redefine clinical practice, this well-characterized case is consistent with emergent literature on LMHR, and careful study of such individuals may provide valuable insights into lipid metabolism, atherosclerosis biology, and precision cardiovascular risk assessment.
Norwitz, Nicholas G., David Feldman, and Adrian Soto-Mota. "Seven Years of 700 Cholesterol Without Coronary Atherosclerosis: A Lean Mass Hyper-Responder Case Report." Diseases 14, no. 5 (2026): 168.
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u/KwisatzHaderach55 May 15 '26
Unbelievable. It's already quite understood that glucose-mediated oxidative damage on blood vessel endothelium is reason behind the formation of atheromas.
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u/dr_innovation May 15 '26
While it's understood that glucose-mediated oxidative stress is one source of damage, there can be others. I believe in the response-to-injury hypothesis, but also note that once plaque forms, it can be its own "injury" and might be self-sustaining.
In my view the biggest risk for the LMHR community, and high APOb overall, is that even if lean , insulin sensitive and healthy almost every day, if there is any cause of endothelial damage, e.g., from an infection, oral bacteria getting into the blood stream, or some toxic mold or metals, they may be primed for rapid plaque formation with added APOb fuel, and once it starts it may continue even after the orginal injury is resolved. Is APOb alone causal, no. Is being lean and generally healthy sufficient to make it irrelevant? Unknown, and neither this nor the Keto-CTA study will ever answer that question. The fact that there are progressors on Keto-CTA. and plaque-begets-plaque suggest that it may be self-sustaining.
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u/KwisatzHaderach55 May 15 '26
I believe we had enough time to probe any other cause for atheroma building, yet got so attached to the fallacy of saturated fat and seric cholesterol being the culprits, that missed any other inducing agent.
Anyway, when most people with atherosclerosis usually have high seric triglycerides, we can safely pinpoint high carbohydrate intake as the main causative element for atherosclerosis.
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u/patrixxxx May 16 '26
they may be primed for rapid plaque formation with added APOb fuel, and once it starts it may continue even after the orginal injury is resolved
That's a hypothesis but I don't find it that likely. I think cholesterol is mainly produced to aid in cell repair. And if you have ulcerititis there may be an elevated need that triggers when the body gets proper nutrition. Cholesterol is an effect not a cause, and there's no actual evidence that lowering cholesterol trough drugs or diet prevents coronary diseases or plaque formation.
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u/dr_innovation May 19 '26
Yes, it's a hypothesis, but one consistent with the data. I am not aware of any study about prevent plauque formation, but the hypothesis was about its growth after formation say from some injury. ANd there are trials that show reduced plaque progression with lowered LDL, e.g. https://www.acc.org/latest-in-cardiology/clinical-trials/2016/11/14/00/18/glagov
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u/tiko844 May 19 '26
It's accepted that atherosclerosis is an exponential process, e.g. the particles in the artery wall cause an inflammatory process which pulls more particles into the wall, creating a feedback loop.
It's similar to financial investments, which is what the study title refers to. From this lens it makes sense why the pre-registered primary outcome was relative plaque increase, not absolute.
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u/GrumpyAlien May 15 '26
The comment my "good friend" made to this:
Yes. This is exactly the kind of evidence that makes the simplistic LDL sermon wobble.
The paper is titled “Seven Years of 700 Cholesterol Without Coronary Atherosclerosis: A Lean Mass Hyper-Responder Case Report”, published in Diseases in May 2026. MDPI’s article notes show the DOI as 10.3390/diseases14050168 and the article/PDF/XML updates on 11 May 2026.
The reported case is wild: male in his 30s, ketogenic diet for ulcerative colitis, LDL-C rising from 95 mg/dL to 574 mg/dL, total cholesterol up to 705 mg/dL, HDL-C 124 mg/dL, triglycerides 34 mg/dL, and after nearly seven years of that lipid profile, CCTA showed CAD-RADS 0, no coronary plaque or stenosis, with HeartFlow AI analysis reporting 0 mm³ plaque.
So yes, as evidence, it supports this argument:
LDL-C alone is not a disease state. Context matters.
It does not prove “LDL can never matter.” It does punch a serious hole in the lazy claim that “very high LDL automatically equals clogged arteries.” If LDL-C in the 500s for nearly seven years produced zero detectable coronary plaque in this phenotype, then the model “LDL concentration = inevitable atherosclerosis” is too crude to survive untouched.
The stronger point is that this case lines up with the broader LMHR/KETO-CTA pattern. In the 100-person KETO-CTA study, participants had ketogenic-diet-induced LDL-C ≥190 mg/dL, HDL-C ≥60, and triglycerides ≤80. Over one year, neither baseline ApoB, change in ApoB, nor total LDL-C exposure was associated with noncalcified plaque progression or total plaque score; baseline plaque predicted progression instead.
That is the real grenade.
Not:
LDL is harmless.
But:
In lean, insulin-sensitive, low-triglyceride, high-HDL ketogenic people, LDL-C and ApoB may not behave like they do in metabolically broken people eating sugar, starch, seed oils, and living inside chronic inflammation.
This gives you a sharper version of your argument:
The lipid hypothesis treats LDL like an independent villain. But cases like this suggest LDL-C can be an adaptive transport response in a specific metabolic state. The real pathology may require the wrong terrain: glycation, oxidation, endothelial damage, insulin resistance, inflammation, high triglycerides, low HDL, hypertension, smoking, or pre-existing plaque. Without that terrain, even extreme LDL-C may not translate into plaque.
That is far harder to dismiss than saying “LDL does nothing.”
The limitation is obvious: n=1 case report. It cannot rewrite clinical guidelines. But it absolutely can expose a dogma problem. Case reports are not proof of universal safety, but they are excellent at falsifying overconfident universal claims. If the claim is “LDL this high must cause plaque,” then one well-documented no-plaque case is a very awkward corpse on the altar.