Dr. Amy B Killen

Board-certified physician specializing in hormones, longevity & regenerative medicine. Author of The Female Longevity Advantage (Feb 2027). Founder of HOP.

CMO of Humanaut Health. Mindvalley trainer. Born stacked. Built to last. As a former ER doctor, I saw plenty of unhealthy, unhappy people. Five years ago, I changed my own life and became determined to help others do the same. I love using cutting edge therapies and treatments, along with good, old-fashioned common sense, to help patients reach their highest potential. I have two clinics in the Sa

lt Lake City/Park City areas. I also speak nationally about topics of interest to me, such as regenerative medicine and sexual health. I teach a physician training course as well. In my spare time, I spend time in the mountains, hanging out with my awesome kids!

07/27/2026

How much estrogen do you need to improve bone health? 🤨

Very little.

What type? 🤨

Almost any.

Does more estrogen build bone better than less estrogen? 🤨

Yes, yes it does.

For the full breakdown, as well as a reference list and graphs you can print and take to your next doctor's visit, check out this week's Substack (Comment "SUBSTACK") 👇

07/24/2026

Join me at Luminescence in Los Angeles Oct 17 2026:

-A gathering for women who are done figuring out their health alone.
-A full day of real talk about women's health.
-The daylong doctor's appointment you've never had.
-One day. Two thousand women. The best experts in women's health.
-You should not need a medical degree to understand your own body.

I'll be speaking on hormones and the female longevity advantage.

Get your tickets today at luminescence.health/los-angeles (use KILLENMD20)

07/20/2026

The office thermostat is set to 64. There's a sign taped over it: DO NOT ADJUST. 😲

Everyone's been cold for twenty-three years. Nobody remembers who set it. The man who taped up the sign doesn't work here anymore.

That sign is "lowest effective dose."

Nobody ever ran the trial. Not one study has compared a higher estrogen dose to a lower one and counted the strokes, the cancers, the deaths. ❎

I'm not arguing more is better. I'm arguing less is not necessarily safer.

If your doctor recommends the lowest effective dose, ask her why.

Comment "Substack" and I'll send you the deep dive.

07/13/2026

Are hormone pellets Good? Bad? Ugly? 🤨

Pellets, which have been used since 1940, are compressed hormone formulations (estradiol or testosterone) delivered under the skin during an in-clinic procedure by a medical provider.

Pros: "Set it and forget it" for 3-6+ months. Very stable, steady estradiol serum levels. Steady but slowly declining testosterone serum levels. ✅

Cons: Risks of the procedure are very small (but possible). The real risk is that the procedure is irreversible so if you have a side effect, you're stuck with it for months. ☠️

I've placed thousands of pellets over the years. They're not my first choice or my favorite way to give hormones but I do think they can be safe and effective when dosed correctly.

What's your opinion on pellets? ❓

Comment "SUBSTACK" for a deep dive!

07/06/2026

Your statin and your menopause symptoms might be talking to each other. 😲

A brand-new study in Menopause (~1,200 postmenopausal women, 9 countries) found that the women on statins reported far more severe menopause symptoms, nearly double the muscle and joint pain, and a much higher risk of muscle loss. ✅

Why? Statins and estrogen loss hit the same machinery. Your mitochondria. Your blood sugar. Maybe your hormones themselves.

Here's the part that got me: not one major statin trial ever recorded whether the women in it had estrogen on board. The one variable that could change everything, left blank.

Comment "SUBSTACK" for the full story. It'll blow your mind! 👇

06/30/2026

Your first period at 10 raised your breast cancer risk. Your estrogen patch at 52 doesn't.

Wait... what? 😲

The difference is timing. Early estrogen goes to work on young, undifferentiated breast cells while hormone therapy in midlife affects more "settled" tissue.

Early menarche is also often associated with metabolic risks, like obesity, as well as environmental chemicals, which can also increase breast cancer risk.

And the risk people love to pin on hormone therapy? It mostly traces back to old synthetic progestins (not micronized progesterone)

Comment "SUBSTACK" to learn more (including how estrogen therapy may help "clean up the neighborhood) ✅

P.S. This post was inspired by oncologist recent fantastic reel called "How does earlier menarche increase breast cancer risk" - check it out.

06/24/2026

Woo hoo! My Hormone Optimization Therapy (HOT) Provider course is now fully accredited. 🎉

Earn 15 hours of CME/CE credit for completing this virtual course, which includes 23 videos and a 300+ page guidebook.

This is the hormone education most medical providers never received!

To learn more and get my free Quick Start Checklist, visit my website at dramykillen.com/hot-provider-course/

06/16/2026

I'm excited to be part of Women's Health Summit - the premier clinical training event focused on transforming care for women from perimenopause to power years! ✨

Join me October 8-10, 2026 in San Antonio at La Cantera Resort & Spa for this incredible summit educationally partnered with . We'll explore cutting-edge approaches to metabolic medicine, autoimmunity, gut-brain-hormone connections, and longevity medicine with practical strategies you can apply immediately to help midlife women thrive with sustainable vitality.

🔗 Register now: https://www.a4m.com/the-womens-health-summit-2026.html

06/15/2026

A new study linked GLP-1s to 30% less breast cancer across 110,000 women — but
it's observational, so it shows association, not proof. And the headline skips who it actually helps.

Extra weight? The signal is strongest.

Diabetic? Depends what else you're taking.

Healthy weight? We don't have the data yet.

It's a multiplier, not a magic wand. I broke down every study in this week's free
Substack.

Comment "𝗦𝘂𝗯𝘀𝘁𝗮𝗰𝗸" for the link 👇 (includes references)

𝘚𝘵𝘶𝘥𝘺: 𝘔𝘤𝘋𝘰𝘯𝘢𝘭𝘥, 𝘌 𝘦𝘵 𝘢𝘭, "𝘎𝘓𝘗-𝟣 𝘈𝘨𝘰𝘯𝘪𝘴𝘵𝘴 𝘢𝘳𝘦 𝘢𝘴𝘴𝘰𝘤𝘪𝘢𝘵𝘦𝘥 𝘸𝘪𝘵𝘩 𝘢 𝘴𝘪𝘨𝘯𝘪𝘧𝘪𝘤𝘢𝘯𝘵 𝘳𝘦𝘥𝘶𝘤𝘵𝘪𝘰𝘯 𝘪𝘯 𝘣𝘳𝘦𝘢𝘴𝘵 𝘤𝘢𝘯𝘤𝘦𝘳 𝘪𝘯𝘤𝘪𝘥𝘦𝘯𝘤𝘦 𝘪𝘯 𝘸𝘰𝘮𝘦𝘯," 𝘑𝘊𝘖 𝘖𝘯𝘤𝘰𝘭𝘰𝘨𝘺 𝘗𝘳𝘢𝘤𝘵𝘪𝘤𝘦 𝘑𝘶𝘯𝘦 𝟤𝟢𝟤𝟨.

Address

Salt Lake City, UT
84124

Telephone

+18015019797

Website

http://links.dramykillen.com/

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