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ForumsMetabolic Health & DiabetesGLP-1 and beta-cell preservation — September 2026 Page 2

GLP-1 and beta-cell preservation — September 2026

NicoleRaleigh Mon, Apr 20, 2026 at 10:50 AM 6 replies 538 viewsPage 2 of 2
Dr.ObesityMed
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Apr 20, 2026 at 7:20 PM#6
Dr.SportsMedIN said:
My labs after 9 months on glycaemic control: A1C 5.6%, fasting glucose 81 mg/dL, fasting insulin 4 uIU/mL.

Glycemic variability as the key metric for glycaemic control success: my coefficient of variation (CV) on CGM dropped from 35% to 21%. Target is <36%, with <30% being ideal.

Why this matters more than average glucose: large glucose swings cause oxidative stress, endothelial damage, and promote advanced glycation end-products (AGEs). A flat glucose line at 95 mg/dL is metabolically healthier than oscillating between 60 and 160, even if the average is the same.

31 1EndoResFellow, PharmacoVig_BOS, SurmountFan_IN and 28 others
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lisa_labSD
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Apr 20, 2026 at 10:41 PM#7
NicoleRaleigh said:
A1C went from 7.4 to 5.6 over nine months and my prescriber was more interested in the fasting insulin, which I did not expect.

Fasting insulin is the lab my functional medicine doctor cares about most for glycaemic control: it's a much earlier marker of metabolic dysfunction than glucose or A1C.

My fasting insulin: 22 → 12 → 7 uIU/mL over 9 months. Target is <7. By the time your fasting glucose is elevated, your insulin has been elevated for YEARS trying to compensate.

Ask your doctor to include fasting insulin in your bloodwork panel. It's cheap (~$20) and incredibly informative.

30 0maya_sedona, stefan_berlin, Dr.EM_Chicago and 27 others
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Dr.LipidDallas
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Apr 21, 2026 at 2:02 AM#8
Dr.ObesityMed said:
Glycemic variability as the key metric for glycaemic control success: my coefficient of variation (CV) on CGM dropped from 35% to 21%.

PCOS success story with glycaemic control: as someone with polycystic ovary syndrome, this medication has been transformative beyond weight loss.

After 12 months: periods became regular for the first time in ever, testosterone levels normalized, acne cleared significantly, and — unexpectedly — my hormonal symptoms have almost completely resolved.

GLP-1 agonists address the insulin resistance at the root of PCOS. For PCOS patients, this isn't "just" a weight loss drug — it's treating our underlying metabolic dysfunction.

29 24cory_ATX, lori_vegas, Dr.PulmRoch and 26 others
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jennifer_SEA
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Apr 21, 2026 at 5:22 AM#9

Following on from Dr.BariatricHTX — and this may be the naive question:

Did your prescriber agree with that reading, and if not what was their objection?

Last edited: Apr 21, 2026 at 11:22 AM
28 23jim_asheville, matt_MKE, Dr.ReproEndo and 25 others
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NicoleRaleigh
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Apr 21, 2026 at 9:24 PM#10
Dr.LipidDallas said:
PCOS success story with glycaemic control: as someone with polycystic ovary syndrome, this medication has been transformative beyond weight loss.

Patient selection optimization for glycaemic control: emerging predictive biomarkers for GLP-1 agonist response include:

BiomarkerAssociationEvidence Level
Baseline BMIHigher BMI → greater absolute weight lossStrong
Fasting insulinHigher insulin → better responseModerate
GLP1R gene variantsrs6923761 → variable responsePreliminary
Baseline hsCRPHigher CRP → greater CV benefitModerate
Early weight loss (4 wk)≥3% at 4 wks → strong predictor of ≥10% at 68 wksStrong

The 4-week early responder criterion is the most clinically actionable: if you haven't lost ≥3% by week 4 at a therapeutic dose, discuss optimization strategies with your provider.

36 9mike_nyc, VendorMark, COA_Karl and 33 others
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