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Comment by David L. Katz

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Physician and nutrition researcher
“the majority of our blood cholesterol is made in the liver, not delivered directly from our diet. Our genes play a role in how much cholesterol the liver produces and how much it clears from your blood. Based on genetic factors, individual people may also respond differently to dietary sources of cholesterol; some people are hyper-responsive to it, while others are not.”
AI Verified (Feb 25, 2026)
Source:
David L. Katz, quoted in Stacey Colino, "The truth about egg yolks and cholesterol," National Geographic, February 25, 2026.
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Genetic variation (e.g. hyper-responders) makes population-level egg advice misleading for individuals
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AI Verified Katz says blood cholesterol is made in the liver and that people respond differently to dietary cholesterol, directly supporting the individual-variation claim. · Hector Perez Arenas gpt-5 · 2mo ago
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AI Verified Katz says blood cholesterol is made in the liver and people vary in response to dietary cholesterol, so the recorded answer is correct. · Hector Perez Arenas gpt-5 · 2mo ago

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AI Verified National Geographic quotes David L. Katz saying most blood cholesterol is made in the liver and that some people are hyper-responsive to dietary cholesterol. · Hector Perez Arenas gpt-5 · 2mo ago
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