September 2026

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Could Testosterone Improve Female Fertility? The Overlooked Role of Androgens in the Ovary | Educational Purposes Only

By Dr. John A. Robinson, NMD & Dr. Cristina Romero-Bosch, NMD The Hormone Zone For decades, testosterone in women has been discussed primarily through the lens of libido, muscle, energy and sexual health. When fertility enters the conversation, estrogen, progesterone, FSH, LH and AMH tend to dominate. But testosterone deserves a place in that conversation […]

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Why Waiting for Testosterone to Reach 300 May Be Waiting Too Long | Educational Purposes Only

By Dr. John A. Robinson, NMD & Dr. Cristina Romero-Bosch, NMD The Hormone Zone® For decades, conventional medicine has approached testosterone deficiency largely through the question: How low is low enough? A man may report declining energy, loss of muscle, increasing abdominal fat, diminished sexual desire, poor recovery, or changes in mood, yet still be

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What Should a Woman’s Testosterone Level Actually Be? Physiologic vs. Therapeutic Testosterone | Educational Purposes Only

By Dr. John A. Robinson, NMD & Dr. Cristina Romero-Bosch, NMD The Hormone Zone For nearly 20 years, we have used a therapeutic total testosterone range of approximately 70–150 ng/dL in appropriately selected women. This has never been about simply pushing a laboratory number higher. Our approach developed from years of treating women, following symptoms

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The Ovary After Menopause: Why We Should Think Twice Before Removing It | Educational Purposes Only

By Dr. John A. Robinson and Dr. Cristina Romero-Bosch For years, we have told our patients at The Hormone Zone that menopause does not mean the ovaries suddenly become useless organs. Yes, ovarian production of estradiol and progesterone changes dramatically as reproductive function ends, but we have never believed that the absence of ovulation means

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GLP-1s, Testosterone, Libido and Sexual Health: What Are These Drugs Really Doing? | Educational Purposes Only

By Dr. John A. Robinson, NMD & Dr. Cristina Romero-Bosch, NMD The Hormone Zone GLP-1 medications have transformed the conversation around weight loss, but their effects go far beyond the scale. Semaglutide and tirzepatide influence insulin sensitivity, inflammation, appetite, cardiovascular risk, reward signaling—and increasingly, we are learning, sexual and reproductive health. Three recent papers in

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Red Light and Sexual Health: Could Photobiomodulation Improve Blood Flow, Nerve Function and Sexual Response? | Educational Purposes Only

By Dr. John A. Robinson, NMD & Dr. Cristina Romero-Bosch, NMD The Hormone Zone When most people think about sexual health, they think about hormones, libido or perhaps medications such as Viagra. But healthy sexual function requires something much more complex: a coordinated conversation between the brain, hormones, blood vessels, nerves and genital tissues. That

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When SSRIs Affect the Clitoris: Understanding Sexual Side Effects and PSSD | Educational Purposes Only

By Dr. John A. Robinson, NMD & Dr. Cristina Romero-Bosch, NMD The Hormone Zone Selective serotonin reuptake inhibitors (SSRIs), including medications such as sertraline, escitalopram, fluoxetine and paroxetine, are widely prescribed for depression, anxiety and other psychiatric conditions. They are also well known to affect sexual function, yet when women experience these changes, the problem

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