Six post back Bro Richard provided information on Liver Injury. Here are references for the sources of lead. I ran a check with the built-in AI in my browser to summarize the available information and retrieved the following. Remember that the built in AI tool is a reasonable assistance for quick searching and the informaton should be checked/verified as best as possible.
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AI Overview
Lead can be found in herbal products due to contamination during the growing, processing, or transport of the herbs, or from therapeutic addition. Lead can be present in soil and water where herbs are grown, from airborne pollutants, fertilizers, or from grinding machinery. Some herbal products may also be adulterated with lead to enhance color or increase weight, and certain folk medicines, like Greta and Azarcon, are known to contain lead.
Here's a more detailed breakdown of the sources:
1.
Naturally Occurring Lead:
Lead is a naturally occurring element and can be found in trace amounts in soil and water.
Herbs grown in soil or exposed to contaminated water can absorb lead.
Lead can also be deposited in soil and water from airborne pollutants, fertilizer application, and grinding machinery.
2.
Contamination During Processing:
Lead can be introduced during the processing of herbal products, from contaminated equipment or packaging.
Spices, in particular, may be adulterated with lead to improve their appearance or weight.
3.
Therapeutic Addition (Folk Medicines):
Certain folk medicines, like those used in Ayurveda and traditional Chinese medicine, may contain lead as part of the preparation.
Examples include Greta, Azarcon, and Pay-loo-ah, which are used for various ailments.
4.
Other Sources:
Lead-containing gasoline and point source pollution from smelters, battery manufacturing plants, and mines can contaminate the environment and affect herbs grown in those areas, according to the National Institutes of Health (NIH).
Lead dust, even from older lead-based paint, can contaminate soil and be tracked into homes, potentially affecting herbs grown in gardens.
5.
Specific Herbal Products:
Some studies have found that certain herbal remedies, spices, and ceremonial powders have high levels of lead, particularly in those imported from or made in countries with environmental lead contamination.
Spices like thyme and oregano, and products like Ba-baw-san and Daw Tway, have been identified as potential sources of lead.
In summary, lead contamination in herbal products can stem from natural sources, processing and manufacturing, or deliberate adulteration. Consumers should be aware of the potential risks associated with certain herbal products, especially those from traditional medicine practices, and opt for products with proper labeling and quality control.
Other Reference Links -
CDC Morbidity & Mprtality Weekly Report:
Lead in Spices, Herbal Remedies, and Ceremonial Powders Sampled from Home Investigations for Children with Elevated Blood Lead Levels — North Carolina, 2011–2018 | MMWR Nov 23, 2018
Kim A. Angelon-Gaetz, PhD; Christen Klaus; Ezan A. Chaudhry; Deidre K. Bean, MPH
https://www.cdc.gov/mmwr/volumes/67/wr/mm6746a2.htm"
What is already known about this topic?
No national limit exists for lead contamination in spices. Ingested lead is absorbed quickly by children and causes developmental delays."
Sources of Lead - New York State Department of Health
Some folk medicines contain lead. They often are imported from the Middle East, Southeast Asia, India, the Dominican Republic, or ...
New York State Department of Health: Sources of Lead
Revised 2010
https://www.health.ny.gov/environmental/lead/sources.htm#:~:text=Some%20folk%20medicines%20contain%20lead,and%20Surma%20also%20contain%20lead.Consumer Report:
Your Herbs and Spices Might Contain Arsenic, Cadmium & LeadLisa L. Gill Nov 9, 2021 —
https://www.health.ny.gov/environmental/lead/sources.htm#:~:text=Some%20folk%20medicines%20contain%20lead,and%20Surma%20also%20contain%20lead.Heavy metals can show up in food if the water or soil where food is grown contains them naturally or is contaminated be...
CR tested 126 products from McCormick, Trader Joe's, Whole Foods, and other popular brands. Almost a third had heavy metal levels high enough to raise health concerns.