HPLC_Greg said:

Hair loss update related to hair shedding: I experienced noticeable shedding starting around month 4.

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.

Adding the numbers, since they settle part of this. If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way. Most of the apparent contradictions in these threads dissolve at that step.

LabKate 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…

Adding the part of the answer the thread has not reached. Take it one variable at a time. Almost every unanswerable question in these threads is unanswerable because three things changed in the same fortnight, and no amount of subsequent argument can untangle them after the fact.

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

Was that from a primary source or from a summary of one?

Reporting back.

For the archive: it took about six weeks rather than the two I expected, and the difference between those two numbers was the whole of my problem.