Robert Lustig: Hi Insulin secretion (due to high sugar intake) will result in weight gain. #insulin
The speaker describes insulin receptor knockout (FIRKO/furco) mice from Ron Kahn’s work, which are lean and metabolically healthy because their adipose cells lack functional insulin receptors and thus do not store fat in response to insulin. The chunk then presents the carbohydrate–insulin model: high glycemic-load carbohydrate (lots of sugar) increases insulin secretion, which alters circulating metabolic fuels and promotes fat storage; increased adipose deposition then drives increased hunger. The speaker contrasts this causal pathway with the conventional energy-balance model.
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