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. Alison McAllister

Alison McAllister, ND is the Clinical Consultant Manager at ZRT Laboratory.
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Recent Posts

A Year of Saliva in Research

Posted by Dr. Alison McAllister on Friday, 23 December

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It’s always good to know that the work that ZRT has been doing for over 15 years in the field of salivary testing is still cutting edge and useful.  Today I just wanted to share a few of the studies using salivary estradiol that are being published in the literature. Just a hint, if you want to search for articles on salivary testing use pubmed.gov and search saliva estradiol (or progesterone, testosterone etc.). Be aware that salivary hormone testing is so standard in the research world that rarely is it mentioned in the titles of the papers. Over 310 studies were published in 2016 using saliva testing – 61 studies for testosterone and 189 studies on cortisol, while poor progesterone was neglected with only 14 studies this last year.

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Children’s Cancer – Let’s Talk About It

Posted by Dr. Alison McAllister on Friday, 30 September

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The month of September is known for both menopause month and children’s cancer awareness month. Many people commonly recognize the first but not the second.

I would just like to take a moment and talk about children’s cancer. This is not my typical blog about fun and the joy of science and research that I usually strive for. Don’t worry, I'll blog about the wonders of estrogen, thyroid, or testosterone soon I’m sure. The ZRT family however, has been touched by a child of an employee with cancer – Go Regan! – and sadly 1 out of 300 children will be diagnosed with cancer (under the age of 18). I personally have 3 friends whose children have had cancer and I’ve personally worked with families and been affected by their journeys.  Without awareness, there is no drive for funding of pediatric cancer research or pediatric cancer treatments which today is only 4% of the national research budget and almost zero of the pharmaceutical companies’ budgets. 

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Mineral Mission to Mars

Posted by Dr. Alison McAllister on Friday, 12 August

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Have you seen the movie The Martian?  I highly recommend it. The premise is that an astronaut called Mark Watney goes with a team to Mars, gets left behind and has to survive. I love semi-disaster stories and even better when it's Matt Damon playing the main character. Now, according to the book, Watney had lots of vitamins and mineral supplements to supplement his diet. But if he hadn't had those supplements, there are certain elements that he could have become deficient in that could have led to severe health problems.

Let's explore some of the metal elements that ZRT tests that you might want to take with you on your mission to Mars.

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7 Tips to Making Your Own Blue Zone

Posted by Dr. Alison McAllister on Sunday, 21 February

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Did you know there are 5 places in the world where your odds of living to 100 are greater than anywhere else on the planet?

These regions are called "Blue Zones" and include Sardinia (Italy), Okinawa (Japan), Loma Linda (California, Seventh-day Adventists), Nicoya (Costa Rica), and Ikaria (Greece).

Based on the research and writings of Dan Buettner, people are studying these communities to try to find out how they have tapped into the fountain of youth and are trying to introduce these tools into new communities and towns.

What do these Blue Zone communities have in common?

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