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c/t2dglp1·posted 1 year ago by u/osman_ferrari

what changed for me between month 11 and month 20

Question Clean Column ×4 Sourced ×3

The title is the whole question — what changed for me between month 11 and month 20 — but here is why I am asking.

Certain conditions affect A1c independently of glycaemia. If a result looks inconsistent with the sensor data, that is a question for whoever manages your care rather than for this board.

The diabetes and obesity programmes are separate, with different populations and different primary endpoints. Reading a result across from one to the other is not a comparison.

Sensor accuracy varies across wear, and readings on the first day are the least reliable. Calibration practice and compression artefacts explain many alarming single values.

Happy to answer the boring questions. Those are usually the ones worth asking.

3,756 up / 1,378 down73% upvoted54 commentsid ybrgjb29 Apr 2025

54 comments

30 in this archive, depth 5

best — the order this archive was captured in

u/georgi_haddad469 points·1 year ago

Postprandial excursions typically respond earlier than fasting glucose, so the sequence people observe is not a sign that something is not working.

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u/neha_falk293 points·1 year ago

A1c, CGM, or fingersticks — which are we discussing?

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u/osman_ferrariOP0 points·1 year ago

Correction: that trial is the diabetes programme and the figure you quoted is its glycaemic endpoint, not a weight result.

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u/bastian_eriksen366 points·1 year ago

Variability dropped before the average did, which was visible on the sensor and invisible on the lab result.

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u/kian_solberg307 points·1 year ago

Variability dropped before the average did, which was visible on the sensor and invisible on the lab result.

Disagreeing with this line: that endpoint is from the obesity programme and does not answer the question.

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u/gradient_goblin171 points·1 year ago

The order things move in, since nobody explains it and it worries people.

Postprandial excursions generally respond earliest. Variability tends to narrow before the average does, which is visible on a sensor and invisible on a lab result. Fasting glucose is often the laggard, and A1c — being a three-month average — is the last thing to reflect anything.

So a month in which the sensor looks better and the fasting number has not moved is the ordinary sequence, not a contradiction. Knowing that in advance would have saved me a quarter of unnecessary worry, which is why it is worth writing down.

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u/baseline_drifteranalytical82 points·1 year ago

Careful, that is a regimen change suggestion and it needs to come from whoever manages your diabetes.

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u/fasting_insulin_fMOD130 points·1 year ago

Identifying details redacted from the exported report above.

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u/kian_verhoeven161 points·1 year ago·edited

Identifying details redacted from the exported report above.

This is the distinction that resolves most of the confusion here — average versus shape.

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u/runa_grimaldi107 points·1 year ago·edited

Continuous monitoring shows the shape: postprandial excursions, overnight behaviour and time in range. Two people with identical A1c can have very different distributions.

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u/kian_verhoeven0 points·1 year ago

A1c reflects average glycaemia over roughly the preceding three months, weighted towards the most recent weeks. It cannot show variability and it lags any change you make.

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u/osman_ferrariOP1 point·1 year ago

A1c is a three-month average and it lags everything

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u/cormac_danquah1 point·1 year ago

What does time in range look like, not just the average?

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u/britt_abubakar52 points·1 year ago

Postprandial excursions flattened out first and the fasting number took months to follow. Nobody had told me to expect that order.

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[removed]38 points·1 year ago

[removed by moderator]

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u/fasting_insulin_f21 points·1 year ago

postprandial excursions are where most of the improvement shows up first

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u/marisol_moreau-14 points·1 year ago

nothing here replaces the person managing your diabetes

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u/osman_ferrariOP1 point·1 year ago

My ApoB moved and it turned out to have nothing to do with glucose at all.

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u/arne_nyberg1 point·1 year ago·edited

Small fix — insulin secretion in this class is glucose-dependent, which is precisely why the risk you describe comes from the other agent.

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u/bianca_demir1 point·1 year ago

Same. The first day of a new sensor is unreliable and people rebuild their whole week around it.

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u/marta_weiss38 points·1 year ago

I would not compare your numbers to that population. Different baseline, different regimen, different trial.

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u/nora_ramos14 points·1 year ago

metformin and an incretin agonist are not in competition

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u/bianca_demir26 points·1 year ago

Right, and the diabetes programmes report glycaemic endpoints. Quoting an obesity trial result here is answering a different question.

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u/a1c_arcT2D18 points·1 year ago

Incretin-based agents stimulate insulin secretion in a glucose-dependent manner, which is why hypoglycaemia risk with them alone is low. Risk rises with agents that act independently of glycaemia.

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u/reship_roulette12 points·1 year ago

That A1c change is inside the assay’s variability and the interval you measured over is too short.

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u/freya_onwuka10 points·1 year ago

the diabetes trials report different endpoints from the obesity ones

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u/source_or_silence7 points·1 year ago

Not convinced. Hypoglycaemia risk from this class alone is low; the risk you are describing comes from the combination.

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u/hana_lehtinen17 points·1 year ago

That is a sensor value, not a plasma value, and the two are not interchangeable at that level of precision.

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u/bianca_demir21 points·1 year ago

Brought the whole CGM export to my appointment rather than one number. Entirely different conversation.

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u/adnan_karlsen5 points·1 year ago

sensor accuracy varies and the first day of a sensor is the worst

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Type 2 diabetes as the original indication: A1c trajectories, CGM traces, hypoglycaemia risk when stacked with sulfonylureas or insulin, metformin combinations, and why the weight-loss conversation sometimes drowns out the glycaemic one.

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