Answer:

Zinc and other mineral supplements (as well as herbal supplements) have the potential to be contaminated with toxic heavy metals such as lead, cadmium and arsenic, which is why ConsumerLab.com includes tests for these heavy metals as part of its reviews. Most zinc supplements have not been found by ConsumerLab.com to be contaminated with lead, but, over the years, some contamination has been found. You can see the results of ConsumerLab.com’s latest tests  -- as well as learn more about the forms of zinc in supplements and doses shown to work for different uses -- in the Review of Zinc Supplements and Lozenges >>

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1 Comments

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Gary523
February 8, 2015

BETWEEN 1990 & 2000 THE NATIONAL INST OF HEALTH (NIH) (http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1470060/) DID
A SERIES OF STUDIES OF THE EFFECTS OF D-Limonene ON CANCER WITH VERY POSITIVE RESULTS - AFTER THAT I'VE BEEN ABLE TO FIND VERY LITTLE INFORMATION EXCEPT FOR A RECOMENDATION ON THE OZ WEBSITE. WHERE CAN I FIND UPDATED INFORMATION ON ITS CANCER FIGHTING EFFECTS??
1. WHAT EFFECT DOES D-Limonene HAVE ON SKIN CANCER & HOW DO U APPLY IT?
2. WHAT EFFECT DO SKIN CREAMS WITH VIT C HAVE ON SKIN CANCER?
3.WHAT EFFECT DO SKIN CREAMS WITH ASPIRIN HAVE ON SKIN CANCER?

ConsumerLab.com
February 14, 2015

Hi Gary - Thank you for your question, we've now answered it here: https://www.consumerlab.com/answers//d_limonene_cancer/

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