Do common kitchen spices contain unsafe levels of lead?

What's actually in it

Spices travel a long road before they reach your kitchen. They're grown, dried, ground, packaged, and shipped across the world. At each step, they can pick up lead, cadmium, arsenic, and other heavy metals from soil, processing equipment, packaging, and even intentional adulteration to add weight or color.

You might use only a pinch at a time, but spices go into almost everything: soups, sauces, marinades, and baked goods. Over a week, those small amounts add up.

What the research says

A 2026 study in J Food Compos Anal tested spices bought from regular stores in Las Vegas for lead and other trace elements. The researchers measured exact concentrations and calculated health risk scores based on typical daily use.

Several spices contained measurable lead. Some samples exceeded the levels considered safe for regular consumption. Turmeric, chili powder, and cumin were among the spices most commonly flagged in past studies, and this research confirmed that risk.

The researchers also found cadmium and arsenic in some samples. When these metals combine, their effects can stack. A person using three or four contaminated spices in one dish could get a dose that's higher than any single spice would suggest.

Buying spices from brands that test for heavy metals and share those results is the best protection. Organic certification doesn't guarantee low metal levels, since metals come from soil, not pesticides. Look for brands with third-party testing.