Lead Levels in Spices From Market Basket and Home Lead Investigation Samples in North Carolina

Objectives: Lead investigators in North Carolina found evidence that contaminated spices may contribute to children's elevated blood lead levels. We compared lead levels in samples of spices and other consumable products by country of purchase to inform consumer safety interventions and regulations. Methods: From February 1, 2011, through October 22, 2020, North Carolina lead investigators sampled spices and other consumable products from 103 homes of children with confirmed elevated blood lead levels. In 2017, the study team purchased 50 products frequently sampled during lead investigations, as a market basket sample, from local stores in or near Raleigh, North Carolina. The State Laboratory of Public Health analyzed 423 product samples using mass spectrometry. We extracted environmental sample results from lead investigations from the North Carolina Electronic Lead Surveillance System. Results: The median market basket lead result was 0.07 mg/kg (SD = 0.17); the maximum lead result was 0.88 mg/kg. The median home lead investigation sample result was 0.26 mg/kg (SD = 489.44); the maximum lead result was 6504.00 mg/kg in turmeric purchased in India. Among all samples, products purchased in India had more than triple the median lead levels (0.71 mg/kg) of those purchased in the United States (0.19 mg/kg). Conclusions: Purchasing spices in the United States is an action that consumers can take that may reduce their lead poisoning risk. Regulatory agencies should consider a lead limit of <1 mg/kg as attainable for spices sold in US stores and for ingredients of any foods that may be consumed by children.

Automated summary

Investigators from North Carolina found that contaminated spices may contribute to children's elevated blood lead levels. Samples of spices purchased in India had more than triple the median lead levels of those purchased in the United States. It is suggested that consumers purchase spices in the United States to reduce the risk of lead poisoning, and regulatory agencies should consider setting a lead limit for spices sold in the US and for ingredients in foods consumed by children.