This article might be paywalled, but contamination and adulterants are covered, as well as independent lab analysis of some of the products on the market. https

This article might be paywalled, but contamination and adulterants are covered, as well as independent lab analysis of some of the products on the market. https://www.consumerlab.com/reviews/turmeric-curcumin-supplements-spice-review/turmeric https://www.consumerlab.com/reviews/turmeric-curcumin-supple...