ZRT is a company made up mostly of women. It’s not that we don’t have men working here, but 80% of our employees happen to be women. A combination of a company mostly of women, working in the health field, and having gone to medical school which tends to take away that filter that says “perhaps certain topics are off limits,” can lead to hilarious conversations like our one today on the favorite…

Tags: Menstrual Cycle Mapping, Estrogen, Progesterone, Saliva Testing, Blood Spot Testing, Menstruation


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Periods: The Miracle of Bleeding for 7 Days Without Dying

Delivery of the bioidentical hormones estradiol (E2), progesterone (Pg), and testosterone (T) through the skin as a cream or gel (topically) has become a mainstay of bioidentical hormone replacement therapy (BHRT) for women and men. A plethora of FDA-approved pharmaceuticals, compounded, and even over-the-counter topical BHRT products are available. The popularity of these products lies not only…

Tags: Bioidentical Hormones, Estrogen, Progesterone, Testosterone, Dried Urine Testing, Blood Spot Testing, Serum Testing, Saliva Testing


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Topical Delivery of Sex Steroid Hormones and Distribution in Different Body Fluids

When I turned 12, all of a sudden all of my friends were getting their periods, and I just couldn’t wait to get mine! I was so ready to join the ranks of glamorous women who had the privilege of being initiated into the menstruating club. I wanted to belong with them - everything about periods was synonymous with femininity for me at the time. I had to endure witnessing so many of my classmates…

Tags: PMS and PMDD, Estrogen, Progesterone, Menstruation, Menstrual Cycle Mapping


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Your Guide to PMDD: Causes and Treatment

A symbol of femininity for so many women, our hair demands attention. Both deeply personal and superficially public, changes in the looks of our hair can inspire a range of emotions, driving us to willingly partake in its cutting, straightening, curling, bleaching, darkening, or other aggressive chemical treatments. Hair is part of who we are and how we present ourselves to the world. This is why…

Tags: Stress, Menopause, Cortisol, Progesterone, Estrogen, PCOS, Thyroid Health, Vitamin D, Vitamin B12


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Understanding the Connection Between Hormones and Hair Loss

The practice of placentophagy – a woman consuming her placenta after she gives birth – is a bit of a hot topic these days. For those of you not familiar with the practice, if you're imagining the Dothraki queen devouring the giant, bleeding heart of a horse with her bare hands, you're probably not alone. In reality, there's much less of a "yuck" factor associated with the process when consuming an…

Tags: Elements Testing, Fertility, Estrogen, Progesterone


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Evidence Shows Placentophagy (Placenta Encapsulation) Works

Not quite menopause. Throwing blankets off at night, keeping awake. Fatigue and irritation punctuated throughout the day by heat dissipating from every pore, clouding thoughts, reinforcing forgetfulness. Hair falling out so stubbornly fast. Clothes choosing when to fit. Flooding periods coming sporadically, unexpectedly. They call it “the change of life” – but I feel like a different person…

Tags: Menopause, Neurotransmitters, Estrogen, Progesterone


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Mood and Menopause – Going Through "The Change"

I wanted to share a few of the studies using saliva testing that were published in the literature in 2016. Just a hint, if you want to search for articles on saliva testing, use pubmed.gov and search saliva estradiol (or progesterone, testosterone etc.). Be aware that saliva hormone testing is so standard in the research world that rarely is it mentioned in the titles of the papers. Over 310…

Tags: Saliva Testing, Research, Estrogen, Testosterone, Progesterone, DHEA, Adrenal and Cortisol


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A Year of Saliva Testing in Research

This article is republished courtesy of The Official Website of John R. Lee, M.D. If you missed part one of the article, read it here. A Recipe for Beating (and Preventing) Breast CancerThe latest research on natural progesterone and breast cancer clearly indicates how important it is for women to maintain healthy, normal levels of progesterone that are in proper balance with estrogen. Doing so…

Tags: Hormone Balance, Breast Cancer, BHRT, Estrogen, Estrogen Dominance, Progesterone


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New Research Shows Natural Progesterone Can Help Treat Breast Cancer (Part 2)

This article is republished courtesy of The Official Website of John R. Lee, M.D. This is part one. Part two of this article can be found here. Two months ago, a large team of scientists working on multiple continents published a research study that came to startling conclusions about breast cancer and natural progesterone. The team determined that unlike synthetic progestins, which increase breast…

Tags: Hormone Balance, Breast Cancer, Progesterone, BHRT, Estrogen, Estrogen Dominance


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New Research Shows Natural Progesterone Can Help Treat Breast Cancer (Part 1)

When sex hormones are tested in women either in saliva or blood spot, ZRT test reports give a ratio of progesterone (Pg) to estradiol (E2). The ratio is helpful in clinical practice when both E2 and Pg are within range, yet the patient continues to have symptoms. It is not expected to be normal or used clinically when either E2 and/or Pg are outside of their expected ranges or if the patient does…

Tags: Hormone Balance, Progesterone, Estrogen, Estrogen Dominance, Bioidentical Hormones


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The Pg/E2 (Progesterone/Estradiol) Ratio

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