Learn
Read up on Calorify’s science, tech, and newest findings and features.
Already tested? Check out our results interpretation page to dig into your results.
The Science
Our core proven method: doubly labeled water.
Using safe and natural stable isotopes, Calorify traces how hydrogen and oxygen leave the body in order to measure cellular respiration (when cells turn food into energy). This measure is equal to the number of calories burned by the body during the test period (Westerterp 2017).
Our lab quantitatively measures how much CO₂ you produce. This is the only way to measure calories in a real-world setting.
The Tech
We make our measurements using off-axis integrated cavity output spectroscopy (OA-ICOS).
This technology allows us to achieve incredible precision and accuracy while keeping costs low and throughput high compared to traditional methods (Berman et al. 2012; Melanson et al. 2018).
The Kit
“It’s as simple as a sip of water”
The testing process is simple, consisting of a single a sip of doubly labeled water and the collection of three urine samples over the course of a week - all from home, with no lab visits required. Here’s a quick how-to video and FAQs for more info.
Our Blog
Jay’s Story
Jay Stephenson from Run Free Training has now tested twice with Calorify; This is the story of how he used his Calorify results to make big changes in his lifestyle, prompting big body composition and training improvements.
A Deep Dive into Doubly Labeled Water
Dive into the science of metabolism with Calorify's latest blog post! Discover how doubly labeled water becomes your body's metabolic storyteller, tracking energy expenditure like never before. From its isotopic fingerprint to historical roots, we're demystifying DLW and how it's reshaping metabolic research.
Navigating Myths: the Truth About Metabolic Rate and its (non)Effect on Obesity
Debunking myths about metabolic rate and obesity! Contrary to common beliefs, individuals with obesity don't necessarily have a slow metabolism, emphasizing the importance of caloric balance in weight management (not to mention measuring it with Calorify!).
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