The ZRT Laboratory Blog

The ZRT Blog is an extensive resource for patients and health care providers searching for health and hormone testing information. Here, you can read about ZRT’s cutting edge research, advances in testing, wellness advice, and health industry highlights.

Looking Back: Popular Provider Blog Posts of 2016

Posted by ZRT Laboratory on Monday, 09 January

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As we step into 2017 ready to further our understanding of how hormone imbalance affects health, we wanted to take a brief moment to reflect on the top stories of 2016 that captured your attention on the ZRT Blog.

Following is a round-up of 2016's most popular posts for practitioners.


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Looking Back: Popular Patient Blog Posts of 2016

Posted by ZRT Laboratory on Monday, 09 January

ThinkstockPhotos-78051201_lores.jpg2017 has arrived, and with it comes new opportunity to understand the role of hormone balance in our overall health. 

Before getting started, we wanted to take a brief moment to reflect on the top stories of 2016 that captured your attention on the ZRT Blog. Following is a round-up of 2016's most popular posts for patients.


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The Cortisol Awakening Response in Addressing Adrenal Function

Posted by Dr. Allison Smith on Friday, 04 March

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Diurnal Rhythm Assessment

Thirty minutes after awakening from a good night's sleep, cortisol levels are at the highest they'll be all day. Following the morning peak, cortisol levels then fall to less than half that peak level by noon. They continue to drop to very low levels at night where they stay low during the sleep hours. Some individuals have a sharp rise to reach morning levels, others a more gradual incline. Looking at cortisol levels graphed during the day, any abnormal elevation, or depression of levels, or a loss of the expected curve with its characteristic morning peak and swooping decline towards evening may suggest HPA axis dysfunction – which is what we're most interested in assessing when we're looking at a 4-point salivary cortisol test.

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Book Review: The Role of Stress and the HPA Axis in Chronic Disease Management

Posted by Margaret Groves on Friday, 12 February

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It would not be an exaggeration to say that this book covers everything you need to know about the stress response system and how it affects our health.

Dr. Guilliams reminds us that only 80 years ago the concept of stress as a biological process, and how the stress response is regulated by the hypothalamus-pituitary-adrenal (HPA) axis, was yet to be elucidated. He takes us back to the pioneering discoveries of Hans Selye, who in 1936 published a letter in Nature entitled "A syndrome produced by diverse nocuous agents" and went on to describe the body’s response to stressors in terms of what he called a "general adaptation syndrome" in a monograph published in 1950. While Dr. Selye certainly didn’t have all the answers, he laid the foundations for what became a vast area of research into phenomena that touch every biological system and affect every aspect of our health.

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