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.

Does Following a Gluten-Free, Vegetarian or Vegan Diet Result in Increased Heavy Metal Intake?

Posted by Ted Zava on Friday, 17 March

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A recent study from researchers at the Mayo Clinic in conjunction with the Centers for Disease Control and Prevention (CDC) revealed that people following a gluten-free diet have significantly higher arsenic, cadmium, lead, and mercury levels in urine and blood than those not following a gluten-free diet. [1] Another similar study in 2006 revealed that vegans and vegetarians have an increased cadmium body burden in comparison to those following normal diets. [2] So why do gluten-free, vegetarian, and vegan diets increase the risk of heavy metal exposure? Increased consumption of two foods that are staples for all cultures around the world are the primary culprits: rice and green leafy vegetables.

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On Prostate Cancer Prevention – Identifying Areas of Susceptibility

Posted by Dr. Allison Smith on Friday, 24 June

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In our current medical paradigm, screening for cancer is considered a preventive measure by virtue of providing an earlier diagnosis. Getting an early jump on a disease process like cancer makes treatment exponentially easier and outcomes generally better. Under the current guidelines, that early jump on prostate cancer starts at age 55 for men at low to moderate risk and 40-45 for men at high risk. It takes years for cancer to grow to a detectable point after the tumor's initial induction from a normal cell to a cancerous one. There's been a lot of research done to determine what those inducers are and how they work. Three of these inducers are simple to test for and completely modifiable with treatment and/or avoidance:

  • Bisphenol A
  • Arsenic
  • Catechol estrogens

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Element Testing – Why Sample Type Matters!

Posted by Ted Zava on Tuesday, 03 May

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Urine, serum, plasma, whole blood, red blood cells, feces, hair, fingernails … the list goes on. How do you decide what biological sample(s) to use for element analysis? Can results be compared to scientific literature or do they have clinical significance? Is it possible for values to be elevated or low in one sample type and normal in another? Do test results indicate recent intake, body burden, acute toxicity, chronic toxicity, deficiency, or homeostatic regulation? These are just some of the questions facing a testing laboratory when they want to develop and validate essential and toxic element profiles that will provide clinically meaningful results.

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High Air Levels of Arsenic & Cadmium May Be Linked to a Cancer Cluster in Portland, Oregon

Posted by Ted Zava on Thursday, 04 February

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Many residents were surprised to learn today that high levels of arsenic and cadmium are being detected at an air monitoring station in Southeast Portland, Oregon according to the state Department of Environmental Quality (DEQ)

Watch the News: Dr. Zava comments on toxin exposure in SE Portland

The state began monitoring air quality after moss samples taken from the area last October were found to be high in arsenic and cadmium. The results, which were only made public in the past few days, show cadmium at 49 times the acceptable level and arsenic at 159 times the acceptable level for air.

Of key concern is that the testing location is in an area populated with businesses, schools, and parks. It is not clear yet how long exposure has occurred or whether it is caused by a nearby glass blowing facility. As of this week, the glass blowing facility decided to cease use of arsenic and cadmium.

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