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

tried T2D for 15 weeks. here is what happened.

Caution Long Haul ×9 Sourced ×1

tried T2D for 15 weeks. here is what happened. Not a hot take, just something I have not seen said plainly here.

15 weeks — those are the numbers, and they are the ones I am willing to defend.

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.

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.

Please do not ask me what dose you should be on. I genuinely do not know and neither does anyone else here.

1,810 up / 252 down88% upvoted40 commentsid wxtg2g22 Jun 2025

40 comments

17 in this archive, depth 5

best — the order this archive was captured in

u/fridge_door_no264 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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[deleted]99 points·1 year ago

[deleted]

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u/ferran_batista66 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/cormac_danquah217 points·1 year ago

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/step_count_stan274 points·1 year ago

What else is in the regimen?

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u/ferran_batistaOP-38 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/gustav_lindholm1 point·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/ferran_batistaOP178 points·1 year ago

Correcting myself: 6 weeks between those two A1c results, which is too short an interval to interpret.

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u/hamza_weiss188 points·1 year ago

Assumed the weight endpoints from the obesity trials applied to my situation. They are different programmes.

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u/sock_puppet_spotter115 points·1 year ago

Assumed the weight endpoints from the obesity trials applied to my situation.

Agreed, and the glucose-dependence point is the reason the risk profile reads the way it does.

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u/jonas_cardoso29 points·1 year ago

time in range is the more informative number and it is newer

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u/marta_trevino20 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/milan_chukwu16 points·1 year ago

variability matters as much as the mean

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u/meal_prep_mira15 points·1 year ago

Agreed. A1c is an integrated average over roughly three months and treating it as a current reading causes a lot of unnecessary alarm.

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u/reship_roulette104 points·1 year ago

Are you quoting a diabetes trial or an obesity one?

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u/ilias_kaufmann73 points·1 year ago

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.

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u/gentle_correctionMOD42 points·1 year ago

Retitled — the original quoted an obesity endpoint as a glycaemic one.

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About c/t2dglp1

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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