MikeFit_NJ said:

It is worth asking what the claim would look like if it were false.

Careful with the causal language. Two things moving together in a period when five things changed is not a mechanism, and stating it as one makes the thread less useful to somebody reading it later.

Correct me if the detail matters more than I have assumed.

Adding the numbers, since they settle part of this. Worth stating the units and the reference range whenever you post a number here. A large fraction of the apparent disagreement in these threads is two people using different units and both being right.

Happy to go further on any of that.

COA_Karl said:

Two things moving together in a period when five things changed is not a mechanism, and stating it as one makes the thread less useful to somebody…

There is a second half to this that has not been said yet. There is a difference between no evidence and evidence of no effect, and this subject is one where the two get swapped freely in both directions.

Following on from pat_auckland — and this may be the naive question:

What did you change at the same time, and can you separate the two now?

Closing the loop on my own question.

Update, and it is the boring outcome: nothing was wrong. The measurement I was reading had moved less than its own week-to-week variation, which somebody said upthread and I did not believe.