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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
raj_cambridge
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May 31, 2026 at 1:29 AM#11
LipidDoc_ATL said:
The mental-health dimension is under-measured in the trial literature and the reports here are consistent enough to take seriously.

Genuinely useful, thank you. I had the facts and not the framework. Sending this to two other people who asked me the same thing last week.

Last edited: May 31, 2026 at 2:29 AM
26 1SleepFixSam, PurityPaulOR, MaxMetOK and 23 others
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chris_chi24
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May 31, 2026 at 8:50 AM#12

From the other side of the consultation, briefly.

Vitamin D levels and micronutrients: an often-overlooked connection. Obese individuals store vitamin D in adipose tissue, making it less bioavailable. As you lose fat, vitamin D can actually increase WITHOUT supplementation.

My trajectory: Baseline 18 ng/mL → Month 6 (with supplement) 42 ng/mL → Month 12 48 ng/mL. Target is 40-60 ng/mL. Adequate vitamin D supports immune function, bone health, and mood — all relevant during weight loss.

25 0MounjBrad, nick_newbie, DadBodDave and 22 others
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COA_Karl
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May 31, 2026 at 4:11 PM#13
Dr.PainCLE said:
Iron studies on micronutrients — important especially for women: Marker Baseline Month 6 After Supplementation Ferritin 60 18 45 Iron 90 50 88 TIBC…

I do not accept the framing. The question has been narrowed to the version that has a tidy answer, and the part that was dropped is the part the OP actually asked about.

24 24hyun_seoul, jim_asheville, matt_MKE and 21 others
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Dr.GutHealth
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May 31, 2026 at 11:32 PM#14

Adding the numbers, since they settle part of this. 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 23Dr.RaviCardio, jennifer_SEA, tyler_CSCS and 20 others
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Admin
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Jun 1, 2026 at 6:53 AM#15

Moderator note: the sourcing question belongs in the vendor section and has been split out.

22 22PeptideSynthNJ, Dr.KarenChen, Dr.NateNeph and 19 others
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