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ForumsMetabolic Health & DiabetesRemission of T2DM on GLP-1 — 12 month update

Remission of T2DM on GLP-1 — 12 month update

Dr.GutHealth Mon, Jun 23, 2025 at 8:46 PM 10 replies 1,360 viewsPage 1 of 2
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Dr.GutHealth
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Jun 23, 2025 at 8:46 PM#1

A reference post rather than a discussion. Corrections are the point; I would rather this be right than mine. It is about glycaemic control, and it is deliberately narrow — everything I am not confident about is marked as such.

What is actually established

HbA1c reflects roughly three months of average glycaemia weighted toward the most recent weeks, which is why repeating it at six weeks tells you very little. The improvement on this class comes from two directions — direct glucose-dependent insulin secretion and glucagon suppression, plus the indirect effect of weight loss on insulin sensitivity — and the second continues after the first has plateaued.

The condition it depends on

The caveat that HbA1c is unreliable in anaemia, haemoglobinopathies and recent blood loss, all of which are commoner than people assume. If it disagrees with fasting glucose or a CGM, that is worth chasing.

The practical version

Because it is glucose-dependent, this class carries a low intrinsic hypoglycaemia risk on its own — the risk arrives when it is combined with insulin or a sulfonylurea, which usually need reducing.

What I am not sure about

The question I want answered is why A1C lags the way it does, and what to look at in the meantime if you want to know sooner. Numbers rather than impressions, if you have them.

— Dr.GutHealth · corrections welcome and will be edited into this post with credit
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RetaRick_CA
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Jun 23, 2025 at 9:14 PM#2
Dr.GutHealth said:
HbA1c reflects roughly three months of average glycaemia weighted toward the most recent weeks, which is why repeating it at six weeks tells you very…

Glycemic variability as the key metric for glycaemic control success: my coefficient of variation (CV) on CGM dropped from 36% to 22%. 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.

32 2AmyNC_wife, SkepticalSean, Dr.CardioMD and 29 others
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amsterdam_pete
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Jun 23, 2025 at 9:42 PM#3
Dr.GutHealth said:
HbA1c reflects roughly three months of average glycaemia weighted toward the most recent weeks, which is why repeating it at six weeks tells you very…

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

After 7 months: periods became regular for the first time in years, testosterone levels normalized, acne cleared significantly, and — unexpectedly — I got pregnant naturally after 4 years of trying.

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.

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Dr.NateNeph
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Jun 23, 2025 at 10:10 PM#4
amsterdam_pete 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.

Last edited: Jun 24, 2025 at 12:10 AM
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A1cHero_PHX
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Jun 24, 2025 at 12:45 AM#5
RetaRick_CA said:
Glycemic variability as the key metric for glycaemic control success: my coefficient of variation (CV) on CGM dropped from 36% to 22%.

Can confirm. Same sequence, different timescale. Nothing to add that would improve it.

29 24jason_sac26, chris_chi24, tampaLisa73 and 26 others
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