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.



Dr. Kate Placzek

Kate Placzek, PhD, is a Senior Research Scientist at ZRT Laboratory.
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Recent Posts

Glycine – A Small Molecule with a Big Impact on Sleep

Posted by Dr. Kate Placzek on Friday, 10 August

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Glycine has a calming effect on the brain it helps you wind down and prepare for sleep – its role as an inhibitory neurotransmitter has been unfolding over many years of ongoing research efforts.

Easily one of the most versatile amino acids, glycine serves as a building block to proteins (collagen, the most abundant protein in our body, is one-third glycine), and is heavily utilized for the production of heme, DNA and RNA synthesis, glutathione formation, and for enriching the body’s capacity for methylation reactions [1] [2].

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New Study Links Testosterone & Desire For Luxury Goods

Posted by Dr. Kate Placzek on Tuesday, 10 July

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Testosterone, so meaningful to a man’s behavior, is the evolutionary force behind everything intrinsically “male.”  

Historical stereotypes peg testosterone as the macho elixir of legendary magnitude – the “chest-thumping hormone of aggression.” New research, however, is beginning to tease out previously unknown subtleties of testosterone’s effects on behavior. Testosterone is non-trivial for social functioning –  increasing levels enhance generosity [1], cooperation [2], and honesty [3], thereby emphasizing that its effects in shaping male psychological makeup are infinitely more complex than previously thought.

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Heavy Metals, Nutrients & Mental Health

Posted by Dr. Kate Placzek on Wednesday, 23 May

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Influenced by our environment, we are constantly being exposed to elements, whether nutritional or toxic. They are a big contribution to the yin yang dualism of health and disease. 

With heavy metals, contamination is so extensive nowadays that it is no longer a question of whether exposure took place, but rather what the level of exposure was or continues to be.

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The Role of Estrogen & the Microbiome in Preserving Bone Health

Posted by Dr. Kate Placzek on Saturday, 12 May

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I remember my great-grandmother’s hands. So capable, big and warm, covered in freckles, ready to comfort, unbending the clawed rigidity to softly wipe my tears.

I remember her powerful, beautiful mind, endless with patience, tirelessly reading my favorite story over and over from a tattered book. I remember her, trapped in a creaky body, moving slowly around the kitchen in a sort of graceful dance with pain, cooking, cleaning, all the while humming, singing to herself.

In that time and space, to my child eyes, she seemed timeless and invincible. Now all I have are the sweetest memories of her. And the photographs of her looking so lovely and so fragile. She was one of the lucky ones – no falls, no breaks, no fractures. Instead, she quietly, silently, withered, shrank onto herself, rounded back and all.

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