@ElijahKrings Thank you! I had not heard about the Achilles tendon test before, will definitely test it out before the NDT arrives, and compare later on. I have become hypo after eating Macs for lunch and dinner for the past 11 years (2012 -2023). Found Peat's principles in mid 2023, and just cutting out the pufa made me feel and look so much better. Still a lot of junk to clear out, so thinking NDT will help in accelerating the process.