https://www.consumerlab.com/reviews/turmeric-curcumin-supple...
Paywall
The harm is cumulative, and so singling out any single company or product as the one who put you over the "tipping point" to some set of symptoms is next to impossible and any corporation you tried to take to court would likely have a team of high paid lawyers so good luck convincing a carefully selected jury.
I'm not saying we shouldn't be able to sue companies into the ground for mass poisonings, but even when we can prove a company poisoned us, AND can prove that they knew they were doing it, AND even when we can prove they tried to cover that fact up so they could make more money by doing it, companies haven't ever faced meaningful consequences. Not the tobacco industry, not DuPont, certainly not spice manufacturers.
You can safely assume absolutely nothing.
https://www.consumerreports.org/health/food-safety/your-herb...
https://news.ycombinator.com/item?id=29375003 ("Herbs and Spices Might Contain Arsenic, Cadmium, and Lead (consumerreports.org)") (2021)
- "The lack of regulation leaves much of the monitoring of heavy metal levels to companies. [Consumer Reports] contacted all the ones with products in our tests to see how they limited heavy metals."
- "Of the companies that replied to our questions—Al Wadi Al Akhdar, Costco, Bolner’s Fiesta, Gebhardt, Litehouse, McCormick, Roland Foods, Spice Islands, Target, and Whole Foods—a few said they require their suppliers to have a program for controlling or testing for heavy metals. But only three—Al Wadi Al Akhdar, Bolner’s Fiesta, and McCormick—specifically said they test products in their manufacturing plants for heavy metals."