I am all for NSVs. The scale lies. Period.
That being said, I was walking through Costco today with my wife and hear a clinging sound. I look down and my solid gold wedding ring is bouncing on the concrete floor. It has been slipping off quite a bit lately, but this is the first time that it has happened without being soapy or in the middle of some sort of activity.
So there you go. People talk about waist size NSVs, or clothing size NSVs. Keto has caused me to apparently change ring sizes!