"Lead in Spices, Herbal Remedies, and Ceremonial Powders Sampled from Home Investigations for Children with Elevated Blood Lead Levels — North Carolina, 2011–2018" [2018]

https://pmc.ncbi.nlm.nih.gov/articles/PMC6289082/

"Researchers find lead in turmeric" [2019]

https://phys.org/news/2019-09-turmeric.html