heavy metal

[http://dummy.us.eu.org/robert (Robert)]

There's also spices

 https://www.consumerreports.org/food-safety/your-herbs-and-spices-might-contain-arsenic-cadmium-and-lead/

in addition to chocolate.

 https://www.consumerreports.org/health/food-safety/lead-and-cadmium-in-dark-chocolate-a8480295550/

I see that Ca's recommended lead levels are way lower than the
federal standards.

 https://en.wikipedia.org/wiki/Lead_poisoning#Reference_levels

It's interesting that the biggest source of food-born lead poisoning is
tumeric in Bangladesh.