Diet-Heart Hypothesis

How it works

Evidence quality

Highlighted claims

• Dietary cholesterol does not meaningfully change blood cholesterol because the liver adjusts its own production to compensate, maintaining tight homeostasis. — Dietary Guidelines & Junk Science — Interview with Ivor Cummins
• When subjects with diabetes or obesity genuinely eliminate carbohydrates and switch to high-fat diets, blood fat levels drop and all metabolic markers improve dramatically. — Dietary Guidelines & Junk Science — Interview with Ivor Cummins
• Rodent 'high-fat diet' research is systematically misleading because the model used is actually high sugar plus industrial seed oil, not dietary fat. — Dietary Guidelines & Junk Science — Interview with Ivor Cummins
• Ancel Keys' diet-heart hypothesis — that dietary saturated fat elevates blood cholesterol which causes heart disease — is largely incorrect at every link in the chain. — Dietary Guidelines & Junk Science — Interview with Ivor Cummins
• The appearance that dietary fat causes insulin resistance arises specifically when fat is consumed alongside refined carbohydrates, not in isolation. — Dietary Guidelines & Junk Science — Interview with Ivor Cummins