13215d7ddb
Issue #46 (Phase A only — Phase B human rating still pending, issue stays open). Adds the data-collection half of the calibration milestone: - scripts/calibration_runner.sh — runs 20 fixed balanced-depth queries across 4 categories (factual, comparative, contradiction-prone, scope-edge), 5 each, capturing per-run logs to docs/stress-tests/M3.3-runs/. - scripts/calibration_collect.py — loads every persisted ResearchResult under ~/.marchwarden/traces/*.result.json and emits a markdown rating worksheet with one row per run. Recovers question text from each trace's start event and category from the run-log filename. - docs/stress-tests/M3.3-rating-worksheet.md — 22 runs (20 calibration + caffeine smoke + M3.2 multi-axis), with empty actual_rating columns for the human-in-the-loop scoring step. - docs/stress-tests/M3.3-runs/*.log — runtime logs from the calibration runner, kept as provenance. Gitignore updated with an exception carving stress-test logs out of the global *.log ignore. Note: M3.1's 4 runs predate #54 (full result persistence) and so are unrecoverable to the worksheet — only post-#54 runs have a result.json sibling. 22 rateable runs is still within the milestone target of 20–30. Phases B (human rating) and C (analysis + rubric + wiki update) follow in a later session. This issue stays open until both are done. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Researching: Is dietary cholesterol harmful?
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╭─────────────────────────────────── Answer ───────────────────────────────────╮
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│ The question of whether dietary cholesterol is harmful is nuanced and │
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│ remains an area of active scientific debate. Here is a synthesis of the │
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│ current evidence: │
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│ │
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│ 1. **Dietary cholesterol vs. blood cholesterol**: The body produces most of │
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│ its own cholesterol, and dietary cholesterol has a relatively modest and │
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│ variable effect on blood (serum) cholesterol levels. Epidemiological studies │
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│ and clinical interventions have largely shown that dietary cholesterol │
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│ intake does not significantly impact blood cholesterol in most individuals │
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│ [PMC6024687; PMC9143438]. A meta-analysis of 224 studies (8,143 subjects) │
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│ found only modest increases in both LDL and HDL when dietary cholesterol is │
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│ increased [Consensus Academic Search]. │
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│ │
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│ 2. **CVD risk from observational studies**: A 2020 AHA Science Advisory │
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│ (Carson et al., Circulation) found a significant positive relationship │
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│ between dietary cholesterol intake and blood LDL, but evidence from │
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│ observational studies generally does not indicate a significant association │
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│ with cardiovascular disease risk [AHA Journals, │
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│ doi:10.1161/CIR.0000000000000743]. However, a large pooled cohort study │
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│ (n=29,615, published in JAMA) found each additional 300 mg/day of dietary │
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│ cholesterol was associated with higher risk of incident CVD and all-cause │
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│ mortality [PACE-CME; The Cardiology Advisor]. │
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│ │
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│ 3. **Updated dietary guidelines**: The 2015–2020 U.S. Dietary Guidelines │
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│ removed the previous 300 mg/day dietary cholesterol limit, citing no │
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│ appreciable relationship between dietary cholesterol and serum cholesterol. │
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│ However, this decision was contested by scientists who argued the evidence │
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│ was insufficient rather than exculpatory [Regulations.gov scientists' │
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│ comment; PMC6024687]. The AHA's 2026 dietary guidance states that dietary │
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│ cholesterol is 'no longer a primary target for CVD risk reduction for most │
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│ people,' though it still advises limiting cholesterol-rich foods [AHA │
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│ Journals, doi:10.1161/CIR.0000000000001435]. │
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│ │
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│ 4. **Individual variability**: People differ substantially in how they │
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│ respond to dietary cholesterol—'hyper-responders' see more significant LDL │
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│ increases than 'hypo-responders.' Genetic and hormonal factors play │
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│ important roles [ScienceDirect hypo/hyperresponders; PubMed 12074253]. │
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│ │
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│ 5. **Eggs as a cholesterol source**: Eggs are the primary dietary │
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│ cholesterol source studied. Evidence on egg consumption and CVD is │
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│ inconsistent. A 2025 umbrella review found 'critically low' quality of │
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│ evidence and concluded there is no sufficient evidence to discourage egg │
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│ consumption, though weak associations with higher LDL and heart failure risk │
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│ were noted [ScienceDirect, doi:10.1016/j.numecd.2025.103849]. A BMJ │
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│ meta-analysis suggested higher egg consumption could be associated with │
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│ higher CVD risk [BMJ m513]. │
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│ │
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│ 6. **Saturated fat confounding**: Most foods high in dietary cholesterol are │
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│ also high in saturated fat, which does raise LDL cholesterol and CVD risk. │
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│ Eggs and shrimp are notable exceptions [PMC6024687]. │
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│ │
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│ **Bottom line**: For most people, dietary cholesterol in moderate amounts is │
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│ unlikely to be a primary driver of CVD risk. However, it is not completely │
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│ benign—particularly for hyper-responders or people with diabetes—and the │
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│ overall dietary pattern (especially saturated fat intake) matters more than │
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│ dietary cholesterol in isolation. Caution is still warranted, and individual │
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│ factors should guide dietary choices. │
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╰──────────────────────────────────────────────────────────────────────────────╯
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Citations
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┏━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━┓
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┃ # ┃ Title / Locator ┃ Excerpt ┃ Conf ┃
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┡━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━┩
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│ 1 │ Dietary Cholesterol and the │ To date, extensive research │ 0.92 │
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│ │ Lack of Evidence in │ did not show evidence to │ │
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│ │ Cardiovascular Disease - PMC │ support a role of dietary │ │
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│ │ https://pmc.ncbi.nlm.nih.gov/ │ cholesterol in the development │ │
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│ │ articles/PMC6024687/ │ of CVD. As a result, the │ │
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│ │ │ 2015–2020 Dietary Guidelines │ │
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│ │ │ for Americans removed the │ │
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│ │ │ recommendations of restricting │ │
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│ │ │ dietary cholesterol to 300 │ │
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│ │ │ mg/day. │ │
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├─────┼───────────────────────────────┼────────────────────────────────┼───────┤
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│ 2 │ Is There a Correlation │ it was not until the late │ 0.91 │
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│ │ between Dietary and Blood │ 1990s when they were finally │ │
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│ │ Cholesterol? Evidence from │ challenged by the newer │ │
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│ │ Epidemiological Data and │ information derived from │ │
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│ │ Clinical Interventions - PMC │ epidemiological studies and │ │
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│ │ https://pmc.ncbi.nlm.nih.gov/ │ meta-analysis, which confirmed │ │
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│ │ articles/PMC9143438/ │ the lack of correlation │ │
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│ │ │ between dietary and blood │ │
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│ │ │ cholesterol. │ │
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├─────┼───────────────────────────────┼────────────────────────────────┼───────┤
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│ 3 │ Dietary Cholesterol and │ Evidence from observational │ 0.93 │
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│ │ Cardiovascular Risk: A │ studies conducted in several │ │
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│ │ Science Advisory from the AHA │ countries generally does not │ │
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│ │ https://www.ahajournals.org/d │ indicate a significant │ │
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│ │ oi/full/10.1161/CIR.000000000 │ association with │ │
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│ │ 0000743 │ cardiovascular disease risk. │ │
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├─────┼───────────────────────────────┼────────────────────────────────┼───────┤
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│ 4 │ Dietary Cholesterol and │ Differences in dietary │ 0.88 │
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│ │ Cardiovascular Risk: A │ cholesterol ranged from 155 to │ │
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│ │ Science Advisory (full text) │ 1000 mg/d. A significant │ │
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│ │ https://www.ahajournals.org/d │ positive relationship was │ │
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│ │ oi/10.1161/CIR.00000000000007 │ identified between dietary │ │
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│ │ 43 │ cholesterol │ │
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├─────┼───────────────────────────────┼────────────────────────────────┼───────┤
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│ 5 │ 2026 Dietary Guidance to │ Dietary cholesterol is no │ 0.90 │
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│ │ Improve Cardiovascular Health │ longer a primary target for │ │
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│ │ https://www.ahajournals.org/d │ CVD risk reduction for most │ │
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│ │ oi/10.1161/CIR.00000000000014 │ people. Nevertheless, heart │ │
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│ │ 35 │ │ │
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├─────┼───────────────────────────────┼────────────────────────────────┼───────┤
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│ 6 │ Higher consumption of dietary │ Among US adults, higher intake │ 0.87 │
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│ │ cholesterol or eggs linked to │ of dietary cholesterol or eggs │ │
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│ │ increased risk of incident │ was significantly linked to │ │
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│ │ CVD and mortality - PACE-CME │ increased risk of incident CVD │ │
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│ │ https://pace-cme.org/news/hig │ and all-cause mortality in a │ │
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│ │ her-consumption-of-dietary-ch │ dose-response manner, which │ │
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│ │ olesterol-or-eggs-linked-to-i │ was independent of nutrients │ │
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│ │ ncreased-risk-of-incident-cvd │ or diets │ │
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│ │ -and-mortality/2455413/ │ │ │
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├─────┼───────────────────────────────┼────────────────────────────────┼───────┤
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│ 7 │ After Continued Debate, │ Each additional 300 mg of │ 0.87 │
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│ │ Dietary Cholesterol Linked to │ dietary cholesterol consumed │ │
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│ │ Significant Increase in CVD - │ per day was significantly │ │
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│ │ The Cardiology Advisor │ associated with a higher risk │ │
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│ │ https://www.thecardiologyadvi │ for incident CVD and all-cause │ │
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│ │ sor.com/home/topics/metabolic │ mortality, as was each │ │
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│ │ /dyslipidemia/after-continued │ additional half an egg │ │
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│ │ -debate-dietary-cholesterol-l │ consumed per day. │ │
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│ │ inked-to-significant-increase │ │ │
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│ │ -in-cvd/ │ │ │
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├─────┼───────────────────────────────┼────────────────────────────────┼───────┤
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│ 8 │ Scientists' Comment on │ dietary cholesterol is very │ 0.82 │
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│ │ Dietary Cholesterol - │ much a 'nutrient of concern,' │ │
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│ │ Regulations.gov │ because it increases LDL │ │
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│ │ https://downloads.regulations │ cholesterol, a │ │
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│ │ .gov/FDA-2018-P-1593-0049/att │ well-established risk factor │ │
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│ │ achment_2.pdf │ for coronary heart disease. │ │
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│ │ │ Furthermore, the consumption │ │
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│ │ │ of whole eggs is associated │ │
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│ │ │ with the risk of type 2 │ │
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│ │ │ diabetes │ │
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├─────┼───────────────────────────────┼────────────────────────────────┼───────┤
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│ 9 │ Dietary Cholesterol And Blood │ A meta-analysis of 224 studies │ 0.85 │
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│ │ Cholesterol - Consensus │ involving 8,143 subjects found │ │
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│ │ Academic Search Engine │ that dietary cholesterol │ │
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│ │ https://consensus.app/questio │ intake leads to modest │ │
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│ │ ns/dietary-cholesterol-and-bl │ increases in both LDL and HDL │ │
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│ │ ood-cholesterol/ │ cholesterol levels. The study │ │
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│ │ │ highlighted that while dietary │ │
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│ │ │ cholesterol does raise serum │ │
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│ │ │ cholesterol levels, the effect │ │
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│ │ │ is relatively small and varies │ │
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│ │ │ among individuals. │ │
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├─────┼───────────────────────────────┼────────────────────────────────┼───────┤
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│ 10 │ Effect of egg consumption on │ The overall quality of studies │ 0.88 │
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│ │ health outcomes: Updated │ was critically low. The level │ │
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│ │ umbrella review - │ of evidence was very weak for │ │
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│ │ ScienceDirect │ all the significant │ │
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│ │ https://www.sciencedirect.com │ associations: risk of heart │ │
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│ │ /science/article/pii/S0939475 │ failure (RR 1.15; 95%CI: │ │
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│ │ 325000031 │ 1.02–1.30)... higher levels of │ │
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│ │ │ LDL cholesterol (WMD 7.39; │ │
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│ │ │ 95%CI 5.82–8.95)... No │ │
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│ │ │ evidence of association was │ │
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│ │ │ found among all cardiovascular │ │
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│ │ │ outcomes and all-cause │ │
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│ │ │ mortality risk │ │
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├─────┼───────────────────────────────┼────────────────────────────────┼───────┤
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│ 11 │ Egg consumption and risk of │ Results from our updated │ 0.84 │
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│ │ cardiovascular disease - The │ meta-analysis suggest that │ │
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│ │ BMJ │ higher egg consumption could │ │
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│ │ https://www.bmj.com/content/3 │ be associated with a higher │ │
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│ │ 68/bmj.m513 │ risk of cardiovascular disease │ │
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├─────┼───────────────────────────────┼────────────────────────────────┼───────┤
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│ 12 │ Hypo- and hyperresponders to │ Hypo- and hyperresponders to │ 0.78 │
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│ │ dietary cholesterol - │ dietary cholesterol │ │
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│ │ ScienceDirect │ │ │
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│ │ https://www.sciencedirect.com │ │ │
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│ │ /science/article/abs/pii/S000 │ │ │
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│ │ 2916523398897 │ │ │
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├─────┼───────────────────────────────┼────────────────────────────────┼───────┤
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│ 13 │ Here's the latest on dietary │ More recently, accumulating │ 0.87 │
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│ │ cholesterol and how it fits │ data has caused researchers to │ │
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│ │ in with a healthy diet | │ broaden their thinking about │ │
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│ │ American Heart Association │ how dietary cholesterol – and │ │
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│ │ https://www.heart.org/en/news │ eggs – fit into a healthy │ │
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│ │ /2023/08/25/heres-the-latest- │ eating pattern. 'We've │ │
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│ │ on-dietary-cholesterol-and-ho │ advanced considerably,' said │ │
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│ │ w-it-fits-in-with-a-healthy-d │ professor Linda Van Horn │ │
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│ │ iet │ │ │
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└─────┴───────────────────────────────┴────────────────────────────────┴───────┘
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Gaps
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┏━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
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┃ Category ┃ Topic ┃ Detail ┃
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┡━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━┩
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│ source_not_found │ Long-term RCT data on │ Most evidence comes from │
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│ │ dietary cholesterol and │ observational studies or │
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│ │ hard CVD endpoints │ short-term interventions. │
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│ │ │ There are no large, │
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│ │ │ long-term randomized │
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│ │ │ controlled trials │
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│ │ │ directly testing reduced │
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│ │ │ dietary cholesterol │
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│ │ │ versus hard CVD outcomes │
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│ │ │ like myocardial │
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│ │ │ infarction or │
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│ │ │ cardiovascular death. │
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├───────────────────────┼──────────────────────────┼───────────────────────────┤
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│ source_not_found │ Dietary cholesterol │ While some sources │
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│ │ effects in specific │ mention increased CVD │
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│ │ high-risk subgroups │ risk from eggs in people │
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│ │ (diabetes, familial │ with diabetes, the │
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│ │ hypercholesterolemia) │ gathered evidence does │
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│ │ │ not deeply characterize │
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│ │ │ effects in all high-risk │
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│ │ │ subgroups such as │
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│ │ │ familial │
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│ │ │ hypercholesterolemia │
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│ │ │ patients. │
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├───────────────────────┼──────────────────────────┼───────────────────────────┤
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│ contradictory_sources │ Mechanisms │ Confounding between │
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│ │ distinguishing dietary │ dietary cholesterol and │
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│ │ cholesterol from │ saturated fat intake │
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│ │ saturated fat effects │ makes it difficult to │
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│ │ │ isolate dietary │
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│ │ │ cholesterol's independent │
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│ │ │ effect on CVD; different │
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│ │ │ studies handle this │
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│ │ │ confounder differently, │
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│ │ │ leading to inconsistent │
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│ │ │ conclusions. │
|
||
└───────────────────────┴──────────────────────────┴───────────────────────────┘
|
||
Discovery Events
|
||
┏━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━┓
|
||
┃ ┃ Suggested ┃ ┃ ┃
|
||
┃ Type ┃ Researcher ┃ Query ┃ Reason ┃
|
||
┡━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━┩
|
||
│ contradiction │ database │ dietary │ The evidence is │
|
||
│ │ │ cholesterol CVD │ contradictory │
|
||
│ │ │ risk randomized │ between large │
|
||
│ │ │ controlled trial │ observational │
|
||
│ │ │ meta-analysis │ pooled cohorts │
|
||
│ │ │ 2020 2024 │ (showing CVD │
|
||
│ │ │ │ risk) and │
|
||
│ │ │ │ intervention/epid │
|
||
│ │ │ │ emiological │
|
||
│ │ │ │ reviews (showing │
|
||
│ │ │ │ no significant │
|
||
│ │ │ │ association), │
|
||
│ │ │ │ warranting deeper │
|
||
│ │ │ │ RCT-level │
|
||
│ │ │ │ analysis. │
|
||
├──────────────────┼───────────────────┼───────────────────┼───────────────────┤
|
||
│ related_research │ arxiv │ lean mass │ A distinct │
|
||
│ │ │ hyper-responder │ phenotype (lean │
|
||
│ │ │ LDL dietary │ mass │
|
||
│ │ │ cholesterol │ hyper-responders) │
|
||
│ │ │ cardiovascular │ shows pronounced │
|
||
│ │ │ risk 2023 2024 │ LDL increases on │
|
||
│ │ │ │ low-carb diets │
|
||
│ │ │ │ high in dietary │
|
||
│ │ │ │ fat/cholesterol, │
|
||
│ │ │ │ with unclear CVD │
|
||
│ │ │ │ implications. │
|
||
├──────────────────┼───────────────────┼───────────────────┼───────────────────┤
|
||
│ related_research │ database │ dietary │ Multiple sources │
|
||
│ │ │ cholesterol type │ mention │
|
||
│ │ │ 2 diabetes risk │ association │
|
||
│ │ │ eggs 2020 2024 │ between │
|
||
│ │ │ meta-analysis │ egg/cholesterol │
|
||
│ │ │ │ intake and type 2 │
|
||
│ │ │ │ diabetes risk, │
|
||
│ │ │ │ which is not │
|
||
│ │ │ │ fully explored in │
|
||
│ │ │ │ the gathered │
|
||
│ │ │ │ evidence. │
|
||
├──────────────────┼───────────────────┼───────────────────┼───────────────────┤
|
||
│ new_source │ database │ ACC AHA 2026 │ New 2026 ACC/AHA │
|
||
│ │ │ dyslipidemia │ dyslipidemia │
|
||
│ │ │ guidelines │ guidelines were │
|
||
│ │ │ dietary │ referenced but │
|
||
│ │ │ cholesterol │ only partially │
|
||
│ │ │ recommendations │ retrieved; full │
|
||
│ │ │ │ dietary │
|
||
│ │ │ │ cholesterol │
|
||
│ │ │ │ guidance warrants │
|
||
│ │ │ │ review. │
|
||
└──────────────────┴───────────────────┴───────────────────┴───────────────────┘
|
||
Open Questions
|
||
┏━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
|
||
┃ Priority ┃ Question ┃ Context ┃
|
||
┡━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┩
|
||
│ high │ Should dietary cholesterol │ Scientists' comments on the │
|
||
│ │ recommendations differ for │ 2015 dietary guidelines and │
|
||
│ │ people with diabetes or │ some observational studies │
|
||
│ │ familial hypercholesterolemia │ suggest egg/cholesterol intake │
|
||
│ │ compared to the general │ may increase CHD risk │
|
||
│ │ population? │ specifically in people with │
|
||
│ │ │ diabetes. │
|
||
├──────────┼─────────────────────────────────┼─────────────────────────────────┤
|
||
│ high │ Do LDL cholesterol │ Research shows wide individual │
|
||
│ │ hyper-responders to dietary │ variability in LDL response to │
|
||
│ │ cholesterol face meaningfully │ dietary cholesterol; it is │
|
||
│ │ higher long-term CVD risk, and │ unclear whether │
|
||
│ │ should they restrict dietary │ hyper-responders have elevated │
|
||
│ │ cholesterol? │ CVD risk and need tailored │
|
||
│ │ │ advice. │
|
||
├──────────┼─────────────────────────────────┼─────────────────────────────────┤
|
||
│ high │ How much of the observed CVD │ PMC6024687 notes most │
|
||
│ │ risk associated with dietary │ high-cholesterol foods are also │
|
||
│ │ cholesterol in observational │ high in saturated fat; │
|
||
│ │ studies is attributable to │ isolating dietary cholesterol's │
|
||
│ │ saturated fat co-ingestion │ independent effect is │
|
||
│ │ rather than cholesterol itself? │ methodologically challenging. │
|
||
├──────────┼─────────────────────────────────┼─────────────────────────────────┤
|
||
│ medium │ What is the effect of dietary │ PACE-CME study noted that CVD │
|
||
│ │ cholesterol within the context │ risk association from dietary │
|
||
│ │ of a high-quality overall diet │ cholesterol was independent of │
|
||
│ │ (e.g., Mediterranean or DASH │ overall diet quality, but this │
|
||
│ │ diet)? │ needs further investigation. │
|
||
├──────────┼─────────────────────────────────┼─────────────────────────────────┤
|
||
│ medium │ Does the food matrix (e.g., │ The 2025 umbrella review of egg │
|
||
│ │ eggs vs. red meat) in which │ consumption found weak │
|
||
│ │ dietary cholesterol is consumed │ associations; it is unclear if │
|
||
│ │ modify its impact on CVD risk? │ the source of dietary │
|
||
│ │ │ cholesterol modulates risk │
|
||
│ │ │ independently of the │
|
||
│ │ │ cholesterol content. │
|
||
└──────────┴─────────────────────────────────┴─────────────────────────────────┘
|
||
╭───────────────────────────────── Confidence ─────────────────────────────────╮
|
||
│ Overall: 0.78 │
|
||
│ Corroborating sources: 13 │
|
||
│ Source authority: high │
|
||
│ Contradiction detected: True │
|
||
│ Query specificity match: 0.85 │
|
||
│ Budget status: spent │
|
||
│ Recency: current │
|
||
╰──────────────────────────────────────────────────────────────────────────────╯
|
||
╭──────────────────────────────────── Cost ────────────────────────────────────╮
|
||
│ Tokens: 64718 │
|
||
│ Iterations: 3 │
|
||
│ Wall time: 120.07s │
|
||
│ Model: claude-sonnet-4-6 │
|
||
╰──────────────────────────────────────────────────────────────────────────────╯
|
||
|
||
trace_id: 27d81891-5bf2-4bf4-9744-55f39ffaf696
|