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Evidence-based GLP-1 & peptide discussion since 2023
ForumsLab Results & BiomarkersVitamin B12 monitoring — deficiency prevalence on GLP-1 therapy Page 3

Vitamin B12 monitoring — deficiency prevalence on GLP-1 therapy

B12Beth Sat, May 30, 2026 at 4:16 PM 22 replies 530 viewsPage 3 of 5
wanda_boise
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May 31, 2026 at 1:29 AM#11
Dr.LeslieOBGYN said:
The mental-health dimension is under-measured in the trial literature and the reports here are consistent enough to take seriously.

Thank you — that is the clearest version of this I have read, and I have read a lot of them. I will report back once I have actually tried it.

Last edited: May 31, 2026 at 6:29 AM
26 1DanielChem_CHI, marco_milano, pam_columbus and 23 others
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NurseAsh_DET
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Detroit, MI
May 31, 2026 at 8:50 AM#12

Clinical perspective, offered as context rather than as advice.

Iron studies on micronutrients — important especially for women:

MarkerBaselineMonth 6After Supplementation
Ferritin722047
Iron1025280
TIBC312382332
Transferrin Sat30%17%27%

My ferritin cratered at month 6 from reduced dietary intake. Iron bisglycinate 36mg with vitamin C brought it back up. Don't wait for anemia symptoms — test proactively.

25 0ricardo_MIA, BrianDallas92, labquiet_amy and 22 others
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anders_CPH
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May 31, 2026 at 4:11 PM#13
Dr.SleepRoch said:
Blood count monitoring for micronutrients: my doctor noticed my MCV (mean corpuscular volume) trending up at month 6: 88 → 96 fL.

Worth saying that the confident version of this is more useful to the person writing it than to the person reading it.

24 24AussieAnna, BethLabQueen, ChrisMacros and 21 others
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Dr.AddMedPHL
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May 31, 2026 at 11:32 PM#14

One concrete data point for the thread. Keep the original post as written when you update it, and add the correction underneath. An edited-away mistake is invisible to the next person who makes it.

23 23TomFromTexas, mike.trainer_LA, sarah_nash92 and 20 others
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mike_mod
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Jun 1, 2026 at 6:53 AM#15

Moderator note: good thread. Keeping it here rather than moving it, because the question is general enough to be useful. Tagging this one for the weekly digest.

22 22PurityPaulOR, MaxMetOK, MounjBrad and 19 others
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