Episode
Episode 108: PCOS or Under-Fueling? How to Know What’s Really Keeping Your Period Missing
- Published
- May 18, 2026
- Duration seconds
- 2039
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Summary
If you’ve been diagnosed with PCOS but your period is still missing, it can feel confusing to know what your body actually needs. You may be told to eat fewer carbs, exercise more, take Metformin, start Letrozole, or move straight to fertility treatments. But what happens when those recommendations don’t work? And what if PCOS isn’t the full story? In this episode, Lindsey walks through three real client case studies of women who were told PCOS was the reason they weren’t ovulating but after looking deeper at labs, lifestyle history, under-fueling, overtraining, food restriction, stress, and hormone patterns, the picture became much more nuanced. Some clients were misdiagnosed with PCOS when the real driver was hypothalamic amenorrhea. Others truly did have PCOS, but chronic under-fueling and overexercising were still major roadblocks to restoring ovulation and getting pregnant. This episode is a powerful reminder that missing periods are not always explained by one diagnosis, and that the right support depends on understanding what is actually happening in your body. In this episode, we cover: Why PCOS can be a misleading diagnosis when under-fueling is not fully assessed The difference between PCOS/PMOS and hypothalamic amenorrhea Why many women with HA can meet PCOS diagnostic criteria What labs can reveal about whether PCOS or under-fueling is driving a missing period Why low estrogen, normal LH:FSH, low testosterone, and normal androgens may point away from PCOS How restrictive eating, fear of weight gain, and overexercise can suppress ovulation Why “managing PCOS” too aggressively can sometimes make fertility harder How under-fueling can exist even when someone looks healthy, fit, or has a normal BMI Why fertility medications may not work well if the body is stil…