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Author Topic: Toxic metals in ayurvedic preparations from a public health lead poisoning clust  (Read 648 times)

YanTing

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International Journal of Occupational and Environmental Health
Volume 23, 2017 - Issue 3 pages 187-192

Toxic metals in ayurvedic preparations from a public health lead poisoning cluster investigation

Marek A. Mikulski(1), Michael D. Wichman (b), Donald L. Simmons (c), Anthony N. Pham (a), Valentina Clottey (a) & Laurence J. Fuortes (a)

a. Department of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City IA
b. State Hygienic Laboratory at the University of Iowa, Coralville IA
c. State Hygienic Laboratory at the University of Iowa, Ankeny IA

Abstract

Background:
Herbal formulations, traditional medicine, and complementary and alternative medicine are used by the majority of the world’s population. Toxicity associated with use of Ayurvedic products due to metal content is an increasingly recognized potential public health problem.

Objectives:
Report on toxic metals content of Ayurvedic products obtained during an investigation of lead poisoning among users of Ayurvedic medicine.

Methods:
Samples of Ayurvedic formulations were analyzed for metals and metalloids following established US. Environmental Protection Agency methods.

Results:
Lead was found in 65% of 252 Ayurvedic medicine samples with mercury and arsenic found in 38 and 32% of samples, respectively. Almost half of samples containing mercury, 36% of samples containing lead and 39% of samples containing arsenic had concentrations of those metals per pill that exceeded, up to several thousand times, the recommended daily intake values for pharmaceutical impurities.

Conclusions:
Lack of regulations regarding manufacturing and content or purity of Ayurvedic and other herbal formulations poses a significant global public health problem.

free full text:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6060866/


Excerpts:

"Ayurvedic formulations are based on herbal products but often include toxic metals and other elements as part of the Rasa Shastra practice [5,7,8]. These elements are used intentionally, as Ayurvedic tradition holds that lead, mercury, copper, gold, iron, silver, tin, and zinc may help restore good health and normal function to the human body [9–11]. Arsenic, aluminum, cadmium, chromium, and nickel may be found in Ayurvedic products as well [5,7,12,13]. It is estimated that over 20% of the Ayurvedic medications manufactured and distributed by U.S. and Indian companies contain toxic metals such as lead, mercury, and/or arsenic [5,14].

"The contamination of herbal formulations with toxic metals poses potential health risks. Several cases of metal toxicity have been reported following the use of Ayurvedic products primarily associated with lead, mercury, and arsenic. These include reports from the United States, Canada, England, New Zealand, and India [6,15–24]. Recent epidemiological studies show that these products can become a significant public health issue [6]."
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