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After 27 years practicing as a pediatrician and allergist in Texas, Dr. John Poothullil noticed something in his own body that medical textbooks couldn't explain: weight that crept on every winter and refused to leave by spring. The standard answer — "improper diet and lack of exercise" — wasn't an answer at all. So he spent the next several decades building his own.

In this conversation, Dr. John walks Jelani through the "fatty acid burn switch" — his alternative explanation for Type 2 diabetes that challenges the textbook theory of insulin resistance — and the personal story that radicalized his skepticism of mainstream treatment: a relative whose husband, a medical professor, kept her blood sugar perfectly controlled with insulin for years, only for her to lose a limb anyway.

They also get into why "blood sugar" and "table sugar" are not the same thing, how grain-based carbohydrates became the hidden driver of the obesity epidemic, whether low-carb eating can help starve cancer cells, and what's really happening in your body on GLP-1 drugs like Ozempic and Zepbound — including the question Dr. John says almost nobody asks before starting one.

This is a conversation about the difference between treating a number and treating a person — and why understanding your own hunger might matter more than any prescription.

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