Metabolic Response to Carbohydrates, Fats & Proteins (Part I) || Fahad Ahmad & Corey Behn

Metabolic Response to Carbohydrates, Fats & Proteins (Part I) || Fahad Ahmad & Corey Behn

In this extremely science-heavy podcast, we delve deep into the science of how various macronutrients impact energy intake and view some concepts critically using a 2016 review paper.


Fahad Ahmad is a serial entrepreneur who enjoys delving into the science of food and nutrition. He practices Ashtanga Yoga, Weight Training, Crossfit, Calisthenics, and Plyometric type of training and has been part of the fitness and nutrition world for more than 15 years. He leads the "Modern Renaissance" lifestyle of tapping into multiple knowledge bases to solve a problem.

Corey Behn lives a multifaceted life rooted in a foundation comprised of Yoga, Science, Adventure, and Nature. He has always had a burning curiosity of existence itself, constantly seeking out truth in all corners of the universe. He enjoys the sport of rock climbing and photographing beautiful landscapes and macro scrapes alike. When night falls, the cosmos up above receives his full attention, studying all types of celestial entities. Corey’s role at Ketogeek originates from his love of creative cooking in the kitchen, continuously creating new symphonies of flavor and texture for our tastebuds.


1:30 - Ketogeek updates, Energy Pods update, and information

3:30 - Energy Pods new flavor update and enhanced shelf stability

6:15 - Series introduction

10:10 - Macronutrients, energy intake, and nutrition science

14:30 - Nutrition Science's journey from metabolic to endocrine to neural response to macronutrients

19:29 - Metabolic response to carbohydrates and the glucostatic theory of food intake

21:10 - Problems with the initial glucostatic theory of intake

24:50 - The shift from glucose balance to glycogenolysis

27:00 - Do short-term glucose dips suggest increased food intake?

29:30 - Do low glycemic food reliably reduce energy intake?

32:23 - Metabolic response to protein

37:08 - The case for and the problem with 'protein leveraging hypothesis'

40:57 - The case for and the problem with 'protein ceiling effect'

41:58 - Does protein concentration in food matter?

42:40 - Is the thermogenic effect of protein that substantial when it comes to energy intake?

46:50 - Metabolic response to fat and the lipostatic theory of food intake

48:47 - The focus on leptin and the evidence for and against its impact on energy intake

52:04 - The case for and against the short term impact of leptin on energy intake

54:05 - The potential role of fat oxidation in reduction of energy intake

57:15 - The influence of fat on stomach volume

1:01:05 - Our lessons and conclusions from the study

1:08:50 - Final plugs