Outline status: This is a working stub. Highest-affiliate-revenue pillar — link to CGM, inositol, protein products thoughtfully and disclosed.
Hook
Five pounds in eighteen months. Same food, same training, same scale showing up morning after morning. You did not lose your discipline. Your fasting insulin did.
What’s actually happening
Insulin resistance, in plain language. The skeletal-muscle vs. liver vs. adipose insulin resistance distinction (it matters for what you do about it). The HOMA-IR calculation. Why fasting glucose can still be “normal” while fasting insulin has been climbing for three years.
The estrogen connection: estrogen is insulin-sensitizing; declining estrogen in perimenopause shifts the entire glucose-handling baseline.
Why this is happening to you specifically
The fit, formerly fit, or active woman in her late thirties through forties. Why protein-leveraged eaters can still hit insulin resistance. Why low-fat, high-grain “healthy” defaults of the 90s and 2000s left a generation primed for this.
What you can do today
- Get fasting insulin tested (not just glucose). Calculate HOMA-IR.
- Protein floor: 0.8–1.0 g per pound of goal bodyweight. Front-load it.
- Resistance training — the muscle is the glucose sink.
- Walking after meals (the simplest, most evidence-supported intervention).
- CGM trial — what it teaches you in two weeks. (Affiliate context if relevant.)
What to stop doing
Cardio as your primary metabolic strategy. Snacking on “healthy” carbs between meals. Treating fasting as the answer to everything.
The supplement / product question
Inositol (myo + d-chiro 40:1) — the actual data, the actual effect size, the actual cohort it was studied in. Berberine — the GLP-1 comparison hype vs. the modest reality. Magnesium. Honest assessment, not an Instagram ad.
What we still don’t know
Whether time-restricted eating in perimenopausal women produces the same metabolic benefits as in men — the literature on this is genuinely mixed and the cycle-phase effects are under-studied.
CTA
Save this. Reread it before your next physical.
Internal links to add when drafting:
- Body composition stopped responding post
- Silent inflammation cornerstone
- Perimenopause for fit women