how are we able to calculate the calories in food?
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Adding onto this, there’s a lot of debate over whether that is actually even useful or accurate information, from a nutrition standpoint. Calorie intake is likely more complex than a simple chemical reaction. Human digestive processes don’t work the same as bomb calorimeters.
Some articles:
https://www.livescience.com/62808-how-calories-are-calculated.html
https://www.scientificamerican.com/article/science-reveals-why-calorie-counts-are-all-wrong/
https://www.health.harvard.edu/staying-healthy/stop-counting-calories
And the podcast Maintenance Phase has a great episode on it as well.
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