Marc Bates, MPH, has published the second installment of his collaborative YouTube interview series with Rob Bateman (@no_timetocook), exploring digestive science and challenging conventional nutrition beliefs. The latest video examines why carbohydrate-heavy meals cause post-meal fatigue and investigates the metabolic mechanisms behind energy crashes.

During the interview, Bates and Bateman reached significant consensus on metabolic science principles. "Rob basically did agree that protein and fat were the primary nutrients that people needed," Bates stated, highlighting their shared perspective on essential macronutrients.

The discussion centers on stomach acidity and its role in human digestion. Bates explained to Bateman that the stomach's high acidity primarily breaks down proteins and fats rather than carbohydrates, challenging common assumptions about human dietary requirements.

"I was just trying to explain why carnivore was probably the most species appropriate diet because of the high acidity in our stomach showing that humans are by nature apex carnivores," Bates noted during their conversation.

The video explores the Randall cycle, a metabolic process that prevents simultaneous glucose and fat burning. This mechanism explains why consuming carbohydrates forces the body to prioritize glucose processing while storing fat, leading to energy depletion after meals.

The collaboration between Bates and Bateman represents a growing movement among health professionals to examine digestive science through evidence-based analysis rather than popular dietary trends.