As for testing for yeast are those results based on what’s particularly in the gut or the entire body? How are you able to know this by testing my hair?

It is testing cellular health - which is also the gut and the organs of the body. There is more information found on the science page which helps to explain the science behind our testing and how this is determined via a hair sample. We believe the biggest way of knowing if these results are beneficial to you is by trialing out the results as part of an elimination plan and noticing any positive changes.