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Week 14 on tirz, CGM showing weird fasting glucose spikes, anyone tracking this?

Posted by tiredmira in Weight Loss & Metabolic - 1 points, 1 comments.

Been on tirz since June and the weight trend is fine, down about 9% so far, no complaints there.

But my CGM has been showing these odd fasting glucose bumps in the morning, like 102 to 108 even on days where I eat clean the night before.

It is not constant but it is happening maybe 3 or 4 mornings a week now.

Sleep score is okay, HRV is stable, no big stress flags.

I read that some people see this as just the body adjusting but mine started around week 12 and seems to be sticking.

I am also still logging a slight morning cortisol bump which I think is messing with the readout too.

Has anyone else on tirz seen fasting glucose drift up before it stabilizes, or am I looking at early habituation and need to rethink the plan?

Not changing anything until I get bloodwork but curious if this is a pattern or just my own thing 😅

Comments

  • cole_l: Mine did the same thing around the same time frame, fasting numbers crept up into the low 100s for a couple weeks before settling back down. Im not on tirz though so take that with a grain of salt, just a similar arc on a different glp. The dawn cortisol thing you mentioned is real and a CGM does not distinguish gluconeogenesis from dietary glucose, so morning reads are noisy by default. If the trend keeps creeping up though I would pull the trigger on bloodwork sooner rather than later. Also
  • tiredmira: Honestly the timing match is kinda reassuring, And good call on the dawn cortisol noise, I figured the CGM is picking up some gluconeogenesis but seeing it spelled out makes me less twitchy about the numbers. Bloodwork is already booked for next week so I'm covered there. Nothing new started around week 12 that I can think of, training block has been steady for months. One thing I wanna ask, did yours settle on its own or did you tweak anything to nudge it back down?

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