On top of the others’ comments on B12, it’s worth noting that there’s a common blanket recommendation for everyone over 50 to supplement B12, no matter their diet, because absorption gets worse with age. So it’s strange to insist on lack of B12 and need of medicine as a problem only for vegans.
Reference: Institute of Medicine. 1998. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline. Washington, DC: The National Academies Press. https://doi.org/10.17226/6015.
As a reader, each whiff of LLM usage is a red flag. If the writer used it, it’s highly probable that I should use another LLM to summarize it.
And if the final copy used it, surely previous stages used it even more, with all that implies. (I assume it’s not the moment to go into that)
As a writer, it’s symmetric. Why should I expect readers to spend effort that I didn’t? Even if they do, how can I be sure that there wasn’t a drift from my original intended meaning?