DUTCH Dialogue

Study supporting DUTCH testing – Cortisol

By Mark Newman June 20, 2016

At the bottom of this email you can listen to a new webcast with Dr. Kara Fitzgerald talking all about hormone testing. Take a listen…

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Why does DUTCH include cortisone and not just cortisol?

By Mark Newman January 26, 2016

DUTCH testing includes free cortisol throughout the day (just like saliva testing). This is a unique feature of our DUTCH testing model. Unlike saliva testing,…

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Estriol Supplementation and Metabolites – A Caveat

By Mark Newman January 20, 2016

I want to discuss a complicated scenario with you. If you give estriol, please pay attention. If you don’t use estriol in your practice, feel…

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Study supporting DUTCH testing – Improved Serum Correlation

By Mark Newman January 13, 2016

I’ve been anxiously waiting for all our data to roll in from an exciting study, and we’re now ready to share it. What we did…

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Should You Test A Woman On The Birth Control Pill?

By Mark Newman November 10, 2015

To the point: Women on birth control pills have suppressed estrogen and progesterone. If you wonder why their progesterone and estrogen levels are low –…

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Limitation and Caveats on Saliva Testing

By Mark Newman June 24, 2015

Our last educational email was about the limitations and caveats of our dutch testing (as well as urine testing in general). In this post, we…

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Limitations of Lab Testing

By Mark Newman June 23, 2015

I have three important educational videos to share with you. You will definitely learn some things you didn’t know about each of these tests if…

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Saliva Case Study

By Mark Newman June 12, 2015

The following is an interesting case study that highlights the challenge of using saliva testing when monitoring oral progesterone (it is also an interesting example…

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Melatonin Testing Update

By Mark Newman May 27, 2015

Melatonin Testing Testing for melatonin is very important however this depends on whether or not your patient is sleeping and if they take melatonin to…

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Common Medications May Cause Adrenal Insufficiency

By Mark Newman April 30, 2015

Everyone knows that taking corticosteroids like Prednisone can be suppressive to the adrenal glands – this is why they are usually dosed in a tapering…

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