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.

Nutritional Lithium: Orchestrating Our Genes & Optimizing Our Moods

Posted by Dr. James Greenblatt on Friday, 08 September

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This is part two of Dr. Greenblatt's Nutritional Lithium series. Part one can be found here.

Epigenetics & Psychiatry

The field of epigenetics has far-reaching implications for psychiatry. As acquired epigenetic alterations can be transferred to the next generations, what scientists used to label as an inherited psychiatric disease may in fact be the result of epigenetic changes in a family’s shared environment.

Many psychiatric diseases are consistent with the theory of epigenetic dysregulation because of their fluctuating nature and disease course. Single gene and whole genome epigenetic analyses have shown atypical epigenetic markers in the blood and brain of individuals with psychiatric diseases including abnormalities in DNA methylation, histone modifications and microRNA expression.

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Lithium's Billion Year Journey: A Cinderella Story for Brain Health

Posted by Dr. James Greenblatt on Thursday, 24 August

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This is part one of Dr. Greenblatt's Nutritional Lithium series. Part two can be found here.

As far as cosmologists can tell, there were only three elements present when the universe was first formed some 13.8 billion years ago: hydrogen, helium, and lithium.

As one of the three original elements, lithium is found throughout our atmosphere. The sun, stars, and meteorites burn brightly with the gleam of this highly reactive element. On earth, lithium remains a major mineral component of granite rock, and also lingers in significant amounts in sea water, mineral springs, and soils. 

Lithium has also found its way into our cell phones, electric cars, and holiday fireworks. Every organ and tissue in the human body contains the mineral lithium, with particular importance in health, specifically brain health.

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Avoiding 3 Common Interpretation Pitfalls for Salivary Cortisol Tests

Posted by Dr. Allison Smith on Tuesday, 08 August

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One of ZRT's most popular tests includes diurnal assessment of a patient's salivary cortisol levels. On the surface, these tests seem easy enough to interpret, but experienced clinicians know there can sometimes be pitfalls.

Patients testing cortisol in a clinical setting may take undisclosed medications, live under stressful conditions, have inflammation, genetic variations, tumors, and diseases. Sleuthing out the cause of cortisol elevations and depressions can be a real challenge.

To avoid unnecessary work-ups, there are a few areas to consider when interpreting a salivary cortisol test – Contamination, Suppression, and Comorbidities.

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Brussels Sprouts & Healthy Estrogen Metabolism

Posted by ZRT Laboratory on Friday, 21 July

Brussel Sprouts and Good EstrogenYou might ask what Brussels sprouts and estrogens are doing in the same sentence, but I am here to tell you that there is a connection.

Brussels sprouts are the cruciferous connection to healthy hormone metabolism. These age-old options –including cabbage, broccoli, bok choy and cauliflower – have gained new acclaim today as dietary super foods. These plants, cultivated for centuries and originally used as medicines, can nourish us towards superior health and hormone balance.

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