Dr.PeteFamMed said:

If you are going to change something, change one thing and give it long enough to express itself.

This is where I part company with the consensus forming above. This treats a plausible mechanism as a demonstrated one. Plausible is where you start looking, not where you stop.

I would rather be corrected than agreed with, if it comes to it.

Dr.PeteFamMed said:

If you are going to change something, change one thing and give it long enough to express itself.

Agreed on the substance. I would put less weight on the timescale, because two months of anything is not enough to distinguish a trend from a wobble.

Dr.PeteFamMed said:

If you are going to change something, change one thing and give it long enough to express itself.

Thank you for spelling out the reasoning rather than just the conclusion. Taking it to my next appointment.

Clinical perspective, offered as context rather than as advice. The version of this that has an answer is narrower than the version being asked. Narrow it and it becomes tractable; leave it broad and the thread will produce nine confident and incompatible replies.

Closing the loop on my own question.

Second scan under matched conditions, six months apart, same time of day: the lean number came back nearly a kilo higher than the panic scan. Strength was up throughout.