Sarah Glynn
Founder of Peony, author of The Breast Cancer Book, health publisher, caregiver, and breast cancer survivor.

Sarah Glynn built Peony from her own experience navigating a breast cancer diagnosis — and from a lifetime of helping people make complex health decisions with greater clarity and confidence.
A clinically trained midwife and health publisher, Sarah has spent decades translating evidence into trusted, women-centered guidance. When she was diagnosed with breast cancer, she discovered that information wasn't the problem. The challenge was making sense of it — knowing what mattered, which questions to ask, where to turn, and how to coordinate care across many specialists.
She wrote The Breast Cancer Book during active treatment and built the Peony platform alongside it: a Care Plan™, the Peony Companion App, the Healing Happens Together podcast, the Integrative Cancer Doula profession, and the Peony Retreat — an integrated ecosystem so no woman has to face breast cancer in pieces.
Lived experience. Clinical literacy. Decades of trusted publishing.
Founder of Peony
Building an integrative, women-centered breast cancer navigation ecosystem.
Author
The Breast Cancer Book — written during active treatment.
Health publisher
Decades translating evidence into trusted health guidance.
Clinically trained midwife
Bringing professional health literacy to every decision.
Caregiver
Lost her mother to breast cancer; brings generational perspective.
Breast cancer survivor
Knows the realities that don't fit in a fifteen-minute appointment.