Catholic Women Now

Your Cycle, Your Fiat: Hormone Health & Catholic Faith with Jamie Rathjen - 10/08/2026

Episode Summary

Fertility care practitioner Jamie Rathjen, founder of the Fiat Institute, joins Julie Nelson and Chris Magruder to talk about women's hormone health, natural family planning, and how cycle charting reveals root causes like low progesterone, stress, and thyroid issues. Jamie shares how a sleepless night and the word "fiat" led her to a lifelong mission of helping women say yes to God and to the body He gave them. She also explains "bio-evangelism," with real stories of couples and students drawn toward faith simply by learning how their bodies work.

Episode Notes

What if understanding your hormones could bring you closer to God? Julie Nelson and Chris Magruder welcome Jamie Rathjen, fertility care practitioner, certified Creighton Model instructor, and founder of the Fiat Institute, for a faith-filled conversation on women's health, fertility awareness, and the genius of how God designed the female body.

In this episode:

• Jamie's fiat moment: How her University of Northern Iowa master's research on fertility awareness-based methods became her calling, and how the word "fiat" (Mary's yes to the angel Gabriel) came to her in the middle of the night
• Beyond NFP: Why cycle charting does more than help you achieve or avoid pregnancy. It also reveals hormone patterns through perimenopause, menopause, and every life stage
• Low progesterone, explained: Three common root causes (thyroid issues, under-eating or low BMI, and chronic stress) and why addressing them matters for women facing miscarriage and infertility
• Bio-evangelism: How a couple who came in for natural fertility care, and said up front they didn't believe in God, gave their lives to Christ by the end of their Creighton Model follow-ups
• Truth that lights people up: After one UNI lecture on the cycle, several students changed their final research papers to the topic with three weeks left in the semester
• The Fiat Institute: Jamie trains and certifies women as hormone coaches who partner with physicians. No nursing degree is required
• Truth, Beauty & Goodness: Chris reflects on surrender and living in the present moment. Julie recommends the Eucharistic adoration docudrama Adore Him: He Is Here

Become a certified hormone coach or find one near you at the Fiat Institute: fiatinstitute.com

Keep learning with Jamie on The Hormone Genius Podcast: hormonegenius.com

Listen to more Catholic Women Now at IowaCatholicRadio.com

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