Ultimate diet aid? A mass spectrometer! Scientist does diet

So I stumbled on this-


The creator is a scientist who does quite a few debunking videos, but has become interested in dieting. So he figured out we lose weight by breathing. So now he's curious about how that process works, and been doing simpler measurements of his O2/CO2 ratios.

But now he's taking it further. So idea is to use his new $20K mass spectrometer and some 13C carbon isotope to look deeper into his metabolism. So by eating the carbon, seeing how long it takes for that to appear in a breath sample. This intrigues me, and I'm glad I don't have $20K to blow because I've always wanted my own mass spectrometer. I suspect it'll take a while to detect the 13C and what he deduces from the data.

Yep. I saw another video, possibly from Low Carb Down Under where a doc makes the same point. We expel CO2 as a result of carb metabolism, amongst other processes.

And I also found this-

https://en.wikipedia.org/wiki/Urea_breath_test

Where patients are fed the same isotope to diagnose for H. Pylori infection, so maybe there'll be 13C in breath fairly quickly.. Although I guess in the case of that infection, the bacteria process it faster.

Oh.. and a mass spectrometer is the essential kitchen accessory for any molecular gastronomist. As well as being able to provide TMI when someone asks 'what are you eating?'.