Biohacking with Brittany cover image

Biohacking with Brittany

The Truth Behind Calories In vs. Calories Out, Calorie-Measuring Wearables, Age-Related Metabolism Changes, and Debunking Calorie Myths

May 17, 2024
Hari Mix, a Stanford PhD and founder of Calorify, dives into the science of metabolism and calorie measurement. He breaks down the myths surrounding the calories in versus calories out debate, revealing how exercise impacts metabolic rates. Hari shares insights on how his innovative technology helps track daily calorie expenditure. He also discusses how metabolism changes with age and the unique caloric needs during pregnancy, debunking common misconceptions along the way. Prepare for a fascinating exploration of energy management and health optimization!
01:08:12

Episode guests

Podcast summary created with Snipd AI

Quick takeaways

  • Accurate calorie measurement using the doubly labeled water method is essential for understanding daily caloric burn and metabolic health.
  • The principle of calories in versus calories out is valid but often misunderstood due to common inaccuracies in tracking intake and expenditure.

Deep dives

Understanding Caloric Measurement

The podcast delves into the complexities of calorie measurement, emphasizing how the method of doubly labeled water is the only scientifically proven approach to accurately assess daily caloric burn. The process involves consuming a small amount of specially tagged water and providing urine samples over a week, which enables tracking how carbon dioxide and hydrogen leave the body. This method contrasts starkly with reliance on wearables or average estimations, which often lead to significant inaccuracies. The importance of precise measurement is reinforced by the correlation of metabolic health with various public health issues, underscoring the necessity for reliable data.

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