26/02/2026
Luteal phase defect occurs when the body doesn’t produce enough progesterone after ovulation, which is needed to prepare the uterine lining for a healthy pregnancy.
Without enough progesterone, the lining may be too thin or unstable for an embryo to implant and grow, potentially leading to difficulty conceiving or early miscarriage.
How to identify a luteal phase defect?
The best way to identify a luteal phase defect is through basal body temperature charting. A shorter or less sustained temperature rise after ovulation along with a luteal phase of less than 11 days may be indicative of a luteal phase defect.
Luteal phase defect can be caused by factors like stress, PCOS, thyroid issues, or even overexercising. If you experience short cycles, spotting before your period, or trouble staying pregnant, luteal phase issues may be worth exploring with a practitioner.
PMID: 33827766
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