10/26/2026
🚨 HORMONE THERAPY AND BREAST CANCER: LET’S LOOK AT THE FACTS.
In 2002, the Women’s Health Initiative (WHI) study made headlines around the world. Women were told hormone replacement therapy could increase their risk of breast cancer, and many stopped treatment out of fear.
But there’s more to this story than what you heard in the news.
As a physician, I believe you deserve to understand the research, ask questions, and make decisions based on your individual health, not fear-driven headlines.
Here are 4 important things to understand about the WHI study:
1️⃣ AGE MATTERS.
The average participant in the WHI study was 63 years old. That matters because a woman starting hormone therapy around menopause is not necessarily in the same situation as a woman starting in her 60s. Age, timing, and individual risk factors all play a role.
2️⃣ NOT ALL HORMONES ARE THE SAME.
The study used oral conjugated equine estrogens (Premarin) and, in the combined-therapy group, medroxyprogesterone acetate (Provera). These are not identical to every hormone formulation used today. However, we cannot assume that newer or body-identical hormones eliminate breast cancer risk. The specific medication and a woman’s medical history matter.
3️⃣ ESTROGEN-ONLY THERAPY HAD DIFFERENT RESULTS.
In long-term follow-up, women with a prior hysterectomy who received estrogen alone had a lower incidence of breast cancer than the placebo group. The combined estrogen-progestin group had different findings. This is one reason we cannot treat all hormone therapy as if it carries exactly the same risks.
4️⃣ RELATIVE RISK AND ABSOLUTE RISK ARE NOT THE SAME.
Headlines highlighted a 26% relative increase in breast cancer risk in the combined-therapy group. That figure came from the original WHI findings. The absolute increase was much smaller, although the exact numbers depend on the study period and population being discussed.
Both numbers matter. Understanding the difference helps put research into perspective without dismissing real risks.
HERE’S WHAT I WANT WOMEN TO UNDERSTAND.
Hormone therapy is not automatically right for every woman, and it is not automatically off the table because of one headline.
The right decision depends on your symptoms, age, medical history, family history, breast cancer risk, the type of hormones used, and your personal goals.
My approach to healthcare has always been to look at the whole person, not just one lab result, one symptom, or one study. You deserve that same level of attention when it comes to hormone health.
This Breast Cancer Awareness Month, let’s move beyond fear and have informed conversations.
Don’t make a decision about your health based on a headline alone. Get the facts, ask questions, and talk with a qualified healthcare professional about what is right for YOU.
Share this with a woman who deserves a better understanding of her hormone health. 👇
