Comment by Second Nature

Digital health service providing evidence-based nutrition guidance.
Observational research can’t prove causation and is often confounded by other factors like smoking, alcohol consumption, and sedentary lifestyles.
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AI Verified The quote directly explains why observational nutrition research is confounded and cannot establish causation. · Hector Perez Arenas gpt-5 · 53min ago
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AI Verified Observational egg studies are too confounded: for; the quote explicitly says they cannot prove causation and are confounded. · Hector Perez Arenas gpt-5 · 53min ago

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AI Verified Second Nature guide contains the exact statement in its observational-studies section. · Hector Perez Arenas gpt-5 · 54min ago
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