Built to last.
Women outlive men by almost five years. Yet longevity medicine was built for the other half. I’m here to fix that: hormones, muscle, the advantage you were born with, and the science your doctor never got.

The Female Longevity Advantage
“Women outlive men by almost five years. Almost nobody asks why.” The playbook for how female bodies actually age, and how to keep the advantage you were born with. Little, Brown Spark.
Pre-order in any format, claim with your order number, and three bonuses arrive by email:
Hardcover $32.00 · Ebook $15.99 · Audiobook $24.99 · On sale February 23, 2027 · Bonuses close March 2, 2027
Welcome. I’m Dr. Amy Killen, MD.
Longevity physician, regenerative medicine pioneer, and fierce believer that educated women thrive through every phase of life.
I worked as a board-certified emergency medicine physician for ten years and witnessed what happens when we wait too long to care for ourselves. I left emergency medicine in 2013 because I wanted to intervene upstream, to help women stay vibrant, strong and sassy as hell as they navigate midlife and beyond.
Here, science meets soul and empowerment, and play is the prescription.
Pick your next step
Three doors. Walk through whichever one is yours. The book is the fourth, and it is right above.
Join my Substack
Honest, practical hormone and longevity guidance in your inbox, written by me, not a content team, and yes, it is fun.
- Monday deep dives on one topic, with the studies and the jokes
- The stuff I will not post anywhere else: the case that surprised me, the study that annoyed me, what I changed in my own protocol
- Monthly Spotted, Smitten & Soon: what I am reading, using, and doing next
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Start my longevity protocol
HOP Box: the daily stack I formulated for women, and the one I take myself.
- 19 research-backed ingredients in two daily packs
- Built for the female body: hormones, bone, brain, skin
- Subscribe and forget, it lands every month
Ships in the US · cancel anytime
For providers
Medical provider? Get trained.
The HOT Provider Course: 23 on-demand modules, a 300-page clinical guidebook, and 15 CME/CE credits included. Hormone optimization taught the way I wish someone had taught me.
- 23 on-demand modules and a 300-page clinical guidebook
- 15 CME/CE credits included in the price
- Testosterone, estradiol, progesterone, DHEA and thyroid protocols
Want your doctor trained? Give me her name.
I will invite her to the course personally, and tell you when she is in.
Got it. Thank you.
I will reach out to her this week and let you know when she is in.
Longevity medicine was built for the other half.
The ovary is not a bystander in female aging. It is the pacemaker.
Most longevity advice was built on male biology and a lot of wishful thinking. Women outlive men in every country on Earth, then spend more of those bonus years feeling lousy, because medicine forgot to study us.
The book is the playbook. The course trains the doctors. The protocol is what I take myself. Start wherever you are.
Free guides, no strings
Physician-written, evidence-based, and yours for an email.
The Perimenopause Guide
Perimenopause is not a decline. It is the biggest intervention window of your life. What is happening, hormone optimization 101, and how to find a doctor who gets it.
The Optimal Labs Guide
Sixty-six markers across eight panels, with the ranges I actually use in clinic, not the standard reference ranges. What to test, what each number is telling you, and what to aim for.
It’s Not Too Late: Hormones After 60
Women over 60 are told they missed the hormone window. The evidence says otherwise. The guide I wish every woman had before that conversation.
The Estradiol Swap Tool
Patch backordered? A free tool that finds the closest match, and the cheapest one, in about ten seconds.
What people are saying about the book
“Most of what we know about longevity was studied in men and then handed to women as if the biology were the same. Amy Killen starts from the opposite premise. The Female Longevity Advantage puts ovarian aging where it belongs, at the center of how women age, and treats hormone therapy as longevity medicine rather than a last resort for hot flashes. A clear, practical, science-grounded resource for any woman who wants to age on her own terms.”
“Dr. Killen dives deep into the science of female physiology with actionable steps all in one place.”
“Women are not simply ageing versions of men. Every woman should read it.”
“This is a paradigm-shifting guide to female longevity.”
“The future of longevity medicine must include women, not as an afterthought, but as the focus.”
“You want to age with strength and vitality? This is your book.”
“Most books in this space sell hope. This one delivers evidence. Rigorous, funny, and overdue.”
Female longevity isn’t about becoming ageless or chasing some impossible standard of perpetual youth. It’s about understanding your unique biological superpowers, protecting against your specific vulnerabilities, and optimizing for the life you want to live, with energy, clarity, sexiness, strength, and joy.








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