Read the primary source rather than the write-up and the two do not agree, so here is what is actually in it.
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.
Where I think it is weakest: the population was selected and supported in ways a real cohort is not, so I would read the effect size as a ceiling rather than an expectation.
So the question, as narrowly as I can put it: why A1C lags the way it does, and what to look at in the meantime if you want to know sooner. Practical detail welcome, however dull — the duller the better.
Figures above are from the primary publication rather than the press summary. If a number here disagrees with one you have, post yours and we will work out which of us is reading a secondary source.
Dr.Martinez 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…
Complete metabolic panel trending on glycaemic control — sharing because comprehensive data helps everyone:
| Test | Baseline | Month 3 | Month 6 | Month 12 |
|---|---|---|---|---|
| Glucose (fasting) | 114 | 100 | 90 | 84 |
| Insulin (fasting) | 20 | 14 | 10 | 7 |
| HOMA-IR | 4.5 | 3.0 | 1.8 | 1.3 |
| Uric Acid | 7.7 | 6.4 | 5.7 | 5.0 |
The insulin resistance improvement (HOMA-IR) is what my endo focuses on most. Going from 4.5 to near 1.0 is a metabolic transformation.
Dr.Martinez 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…
My labs after 12 months on glycaemic control: A1C 6.3%, fasting glucose 78 mg/dL, fasting insulin 5 uIU/mL. My endo says these are "textbook perfect."
For context, my baseline A1C was 7.1% and fasting glucose was 123 mg/dL. The improvement has been dramatic and consistent.
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Browse GL BiochemDr.RenalNash said:My labs after 12 months on glycaemic control: A1C 6.3%, fasting glucose 78 mg/dL, fasting insulin 5 uIU/mL.
PCOS success story with glycaemic control: as someone with polycystic ovary syndrome, this medication has been transformative beyond weight loss.
After 11 months: periods became regular for the first time in a decade, testosterone levels normalized, acne cleared significantly, and — unexpectedly — my fertility specialist is optimistic about future conception.
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.
Dr.ReproEndo said:Complete metabolic panel trending on glycaemic control — sharing because comprehensive data helps everyone: Test Baseline Month 3 Month 6 Month 12…
This matches mine closely enough to be worth saying so out loud. Posting only so the count is not one.