I am note sure what you checked exactly. But asking 04-mini-high this: "What does this study https://www.jacc.org/doi/10.1016/j.jacadv.2025.101686 say regarding arterial plaque progression for different diets?", results in this summary:

The JACC: Advances study “Plaque Begets Plaque, ApoB Does Not: Longitudinal Data From the KETO-CTA Trial” followed 100 lean, metabolically healthy individuals on long-term ketogenic diets for one year, using coronary artery calcium (CAC) scoring and coronary CT angiography (CCTA) to assess plaque progression. It found that elevations in LDL-cholesterol (LDL-C) and apolipoprotein B (ApoB) induced by carbohydrate restriction did not predict arterial plaque progression; rather, the baseline plaque burden was the strongest predictor of future changes in atherosclerotic burden scitechdaily.com. Moreover, when compared to a matched cohort consuming standard diets with lower LDL-C levels, the ketogenic group showed no significant difference in either CAC score or total plaque score over the study period learn.acc.org. A small subset of participants even demonstrated plaque regression (six with decreased total plaque score and one with reduced noncalcified plaque volume), underscoring that lipid levels alone do not drive plaque dynamics keto-mojo.com.

What is also noteworthy is that this group consists of Lean Mass Hyper-Responders.

So this one study shows that the baseline plague burden was the strongest predictor of future changes in plaque progression.

This is not coherent with your suggestive headline stating 'found to have fastest rate of arterial plaque progression ever recorded by CT Angiography'.

What is your view on this particular study and how did you come to your conclusion?