#136 - AMA #17: Body composition methods tour de force, insulin resistance, and Topo Chico
Nov 9, 2020
Dive into the fascinating world of body composition with a comparison of various measurement methods! Discover the differences between subcutaneous and visceral fat, and why focusing on body fat percentage is crucial. The discussion also tackles insulin resistance, highlighting effective interventions. Plus, find out about the concerning levels of synthetic chemicals in Topo Chico and whether it might influence consumption habits. An engaging blend of scientific insights and practical health tips awaits!
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volunteer_activism ADVICE
Body Fat over BMI
Measure body fat percentage for a more accurate health assessment than BMI.
Consider factors like muscle mass and visceral fat for a comprehensive view.
insights INSIGHT
MRI for Body Composition
MRI is the gold standard for body composition analysis due to its accuracy and ability to differentiate fat types.
However, it's impractical for regular use due to cost and time constraints.
insights INSIGHT
CT Scans and Radiation
CT scans, while faster than MRI, involve significant radiation exposure.
Avoid whole-body CT scans for body fat measurement due to health risks.
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In this “Ask Me Anything” (AMA) episode, Peter and Bob discuss different methods to evaluate body composition. They explore ways of measuring body fat, delineating between subcutaneous and visceral fat, and go over best strategies for improving body composition and optimizing health. They also discuss insulin resistance using a patient case study that highlights interventions capable of reversing the condition. Finally, Peter addresses his level of concern about a recent Consumer Report finding that Topo Chico had the highest levels of a class of synthetic chemicals (PFAS) of all the carbonated bottled waters tested. Peter concludes by sharing if the finding will change his consumption habits. If you’re not a subscriber and listening on a podcast player, you’ll only be able to hear a preview of the AMA. If you’re a subscriber, you can now listen to this full episode on your private RSS feed or on our website at the AMA #17 show notes page. If you are not a subscriber, you can learn more about the subscriber benefits here. We discuss:
Body mass index (BMI) vs. body fat percentage (BF%) (1:45);
Methods of assessing body fat—Magnetic Resonance Imaging (MRI) (6:25);
The different types of body fat (9:00);
Methods of assessing body fat—Computed Tomography (CT Scan) (12:00);
Methods of assessing body fat—Dual-Energy X-ray Absorptiometry (DEXA) (14:30);
Methods of assessing body fat—Hydrostatic/Underwater Weighing (19:25);
Methods of assessing body fat—Air Displacement (Bod Pod) (22:25);
Methods of assessing body fat—Skinfold measurement (23:55);
Methods of assessing body fat—Total Body Water (27:15);
Methods of assessing body fat—Bioelectrical Impedance (BIA) (28:45);
The optimal body fat percentage, muscle mass, and the best strategy to improve body composition (31:30);
Defining insulin resistance and the steps to reverse it (40:15);
Patient case study: Reversing insulin resistance (49:00);
Addressing the recent finding of high levels of PFOA in Topo Chico (58:25); and
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