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ForumsNutrition & SupplementationFiber supplementation for GLP-1 constipation — meta-analysis review Page 2

Fiber supplementation for GLP-1 constipation — meta-analysis review

Dr.GutHealth Sun, Jun 7, 2026 at 7:47 AM 18 replies 389 viewsPage 2 of 4
labquiet_amy
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Jun 7, 2026 at 8:39 AM#6

Adding the numbers, since they settle part of this. A quick sanity check on any figure quoted here: is it mean or median, is it intention-to-treat or completers, and what was the comparator. Three questions, and they resolve most disagreements in these threads.

47 17TrialNerd_Beth, HPLC_Greg, LibrarianMeg and 44 others
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sarah_TO
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Jun 7, 2026 at 8:59 AM#7

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

Whether fiber actually helps GLP-1 constipation or whether the evidence is borrowed from a different population?

46 16Dr.EndoEP, GraceAZ_72, carl_compliance and 43 others
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Dr.ObesityLA
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Jun 7, 2026 at 9:19 AM#8
labquiet_amy said:
A quick sanity check on any figure quoted here: is it mean or median, is it intention-to-treat or completers, and what was the comparator.

There is a second half to this that has not been said yet. Relative and absolute effects need reading together. A 20% relative reduction on a high baseline risk is a large absolute benefit; the same relative figure on a low baseline risk is a small one, and press summaries almost always quote the relative number because it is bigger.

That is the short version; the long version is somebody else's post.

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Dr.GutHealth
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Jun 7, 2026 at 9:39 AM#9

OP back with an update, since a thread like this is useless without one.

Water and magnesium first, soluble fiber second, and dropping the bran entirely. Resolved in about a week after two months of getting it backwards.

Last edited: Jun 7, 2026 at 2:39 PM
44 14Dr.RaviCardio, jennifer_SEA, tyler_CSCS and 41 others
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DanielChem_CHI
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Jun 7, 2026 at 11:16 AM#10
Dr.ObesityLA said:
Relative and absolute effects need reading together.

Acid reflux and constipation: I developed GERD symptoms around week 3 that I'd never had before. The delayed gastric emptying means food and acid sit in your stomach longer.

Management that works for me: elevate head of bed 6 inches, don't eat within 3 hours of lying down, avoid trigger foods (tomato, citrus, spicy, chocolate), and famotidine 20mg at bedtime. Much better now.

Last edited: Jun 7, 2026 at 1:16 PM
8 6nick_SD_fit, ben_calgary, patPC_UT and 5 others
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