Is HRT Safe? 10 Questions Women Ask Most — Answered by a Functional MD

Mark Hyman

May 25, 2026

Episode description

Hormone replacement therapy is one of the most talked about—and misunderstood—topics in women’s health. For years, women were told HRT was dangerous. Now, the conversation is shifting, but many are still left confused about what’s actually safe, when to start, and whether hormones are even right for them.

In today’s episode, I’m joined by Dr. Cindy Geyer from my clinic, The UltraWellness Center, to answer the most common questions we received from our audience about hormone replacement therapy, including:

What the latest research actually says about the safety of HRT—including breast cancer and cardiovascular risk
Why timing matters and the critical “window of opportunity” around perimenopause and menopause
The difference between bioidentical hormones, synthetic hormones, compounded options, and patches vs. oral therapy
How hormones impact sleep, brain fog, weight distribution, insulin resistance, libido, bone health, and healthy aging
Natural strategies that can support hormone balance alongside—or without—HRT, including nutrition, exercise, stress reduction, and targeted supplements
How functional medicine personalizes hormone therapy through testing, estrogen metabolism, gut health, genetics, and lifestyle factors

Menopause is not just a hormone issue—it’s a full-body metabolic transition. And hormone therapy isn’t one-size-fits-all. The key is understanding your biology, your symptoms, and your long-term health goals so you can make informed decisions that support vitality, resilience, and healthy aging.

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As a special thank you for our listeners, we’re offering $300 off a Functional Medicine Consultation Package, the most comprehensive service offering at Dr. Hyman's Functional Medicine Clinic, The UltraWellness Center. To learn more and book your consultation, please schedule a New Patient Discovery Call at the link HERE and reference the Dr. Hyman Show.

Disclaimer: Offer expires July 31, 2026. Functional Medicine Consultation Appointments must be booked by July 31,2026 but may take place at a later date. The initial call with a New Patient Engagement Coordinator is required to book the appointment. Offer not valid on other appointment types or existing appointments. Offer valid for bookings with Dr. Boham, Dr. Geyer, Dr. LePin

Mindsip insights from this episode:

Monitor hot flashes as indicators of heart disease risk

Recent research suggests that experiencing hot flashes and night sweats may be a marker indicating a higher personal risk for developing heart disease later in life.

#heart

#menopause

Continue hormone therapy beyond arbitrary time limits

Contrary to old advice, there is no mandatory time limit for taking hormones, and women should not be routinely taken off just because they've reached a magic number like 10 years.

#HRT

#menopause

Reduce breast cancer risk with estrogen-only therapy

In the Women's Health Initiative study, women who had a hysterectomy and took only estrogen actually showed a reduction in breast cancer risk, implicating the synthetic progestin as the problematic component.

#breast-cancer

#estrogen

Choose whole soy for health, avoid processed soy products

While whole soy foods like tofu and tempeh can help manage symptoms, be wary of highly processed soy protein powders, which have been shown to potentially cause cancer in animal studies.

#cancer

#nutrition

Reassess breast cancer risk based on WHI study findings

The infamous 26% increased breast cancer risk from the WHI study translated to only 8 additional cases per 10,000 women, with no increased risk of dying from the cancer.

Start HRT within 5 to 10 years of menopause for optimal benefits

Starting HRT within the 5 to 10-year window around menopause is ideal because tissues are more responsive and there's less chance of arterial plaque buildup, reducing risks seen in older studies.

#HRT

#menopause

Test urine estrogen metabolites to personalize hormone treatment

Beyond blood levels, you should test urine estrogen metabolites to understand how your body processes hormones, which helps personalize treatment and better assess individual cancer risk.

#estrogen

#testing

Use transdermal estrogen to minimize inflammation risks

Using estrogen through the skin (transdermal) is safer as it avoids the liver, preventing an increase in clotting factors, triglycerides, and inflammatory markers like C-reactive protein (CRP).

#estrogen

#inflammation

Embrace hormone replacement therapy benefits after FDA guideline change

In a major policy shift, the FDA removed the black box warning for hormones, with new guidelines stating that for most women, the benefits of HRT likely outweigh the risks.