Unfortunately this is complicated by the fact that turmeric is perhaps more likely than most spices to have lead contamination as not only is there the usual possibility of contaminated soil there is also a somewhat common practice of using lead chromate to dye it a brighter colour: https://ehp.niehs.nih.gov/doi/abs/10.1289/isesisee.2018.P02.3490
This is indeed a big problem. I personally recommend getting an organic supplement by a company that subscribes to the GMP standard to minimise the chances of such occurrences but - there’s always a chance of malevolent interference.
Unfortunately this is complicated by the fact that turmeric is perhaps more likely than most spices to have lead contamination as not only is there the usual possibility of contaminated soil there is also a somewhat common practice of using lead chromate to dye it a brighter colour: https://ehp.niehs.nih.gov/doi/abs/10.1289/isesisee.2018.P02.3490
This is indeed a big problem. I personally recommend getting an organic supplement by a company that subscribes to the GMP standard to minimise the chances of such occurrences but - there’s always a chance of malevolent interference.