Hello,
If you've ever noticed that the second half of your cycle hits harder — more cravings, more crashes, more "I need a snack right now" moments — there's a mechanism behind it.
It's not willpower. It's progesterone.
The Short Version
In the luteal phase (the ~14 days between ovulation and your period), progesterone is doing most of the heavy lifting. Among its many jobs: it reduces your body's insulin sensitivity by 10-20%.
That means the same meal you ate without thinking in your follicular phase — the bowl of oats, the afternoon banana — produces a sharper blood-sugar spike now. The crash that follows is sharper too. And the craving that follows the crash is louder.
For most women without PCOS, this is mildly inconvenient. For PCOS bodies — already running on baseline insulin resistance — it's the difference between "I feel fine today" and "I cannot stop thinking about chocolate."
What Tends to Help
- Front-load protein. Aim for 30g of protein at breakfast on luteal mornings. Eggs, Greek yogurt, leftover salmon — anything dense.
- Pair every carb with fat or fiber. A naked banana spikes harder than a banana with almond butter. The pairing slows absorption.
- Walk after meals. Even 10 minutes. Skeletal muscle uses glucose directly when it's contracting; it bypasses some of the insulin resistance entirely.
- Skip the 4pm carb-only snack. If you must snack at 4pm, make it a handful of nuts or a hard-boiled egg.
What Your Data Will Show
If you're tracking with the PCOS Wellness OS, the Cycle Phase Tracker (#1) and Blood Sugar Log (#2) running side by side in luteal weeks will surface this pattern within two cycles.
If you're not tracking with it, you can map it manually — note the cycle day next to any blood-sugar reading you take. Two months in, the cluster jumps off the page.
What I do in luteal: protein at every snack, no naked carbs, walk after dinner. What's worked for you? Reply and let me know — I read every email even when I don't always reply quickly.