EDF Health

It’s time to eliminate lead from tin coating and solder on metal food cans

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: January 11, 2021

Tom Neltner, J.D. is the Chemicals Policy Director.

In October 2019, we reported finding canned foods had a surprising number of samples with lead based on the Food and Drug Administration’s testing results. Almost half of the 242 samples had detectable lead, including a staggering 98% of 70 canned fruit samples.

We suspect that the high lead detection rates are a result of lead in the tin – either added to make an alloy or as a contaminant – used to coat the steel or join steel pieces together in the cans. This lead can then leach from the coating or solder into the food. Light-colored fruits and fruit juices would be more likely to have lead contamination based on a report indicating they are commonly packaged in tin-coated steel cans without a synthetic coating on the inside isolating the food from the tin. The lead detections in the other canned products in FDA’s study could have resulted from flawed synthetic coatings.

In December 2020, EDF and ten health, consumer, and environmental groups[1] petitioned FDA to ban the use of lead in food contact materials such as tin. We also included that FDA should presume that lead was intentionally used when levels in food contact materials are at or above 100 parts per million (ppm) and provided an option for the agency to specifically authorize the use only if:

  • The part of the food contact article that contains added lead does not contact food under intended conditions of use; or
  • No lead migrates into food from the food contact article under intended conditions of use.

Our petition demonstrates that, because lead is a carcinogen that is unsafe at any level in the blood, its use in tin coatings and solder for food cans should be expressly prohibited. The agency posted the petition for public comment and must make a decision how to proceed by June 2021. There is no deadline for comments, but it is best to submit them by April 1 so they can influence the agency’s decision.

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When it comes to testing heavy metals in food, the result is only as good as the lab.

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: January 23, 2020

Tom Neltner, J.D., Chemicals Policy Director and Boma Brown-West, Senior Manager.

[pullquote]

“Even though the levels of a metal in any particular food is low, our overall
exposure adds up because many of the foods we eat contain them in small amounts.”

 

Dr. Conrad Choiniere, leader of FDA’s Toxic Elements Workgroup on April 20, 2018

[/pullquote]

Heavy metals such as arsenic, cadmium, and lead are present in most foods, whether conventional or organic, usually as the result of environmental contamination. Because heavy metals pose significant threats even at low levels, the Food and Drug Administration (FDA) has made reducing cumulative exposure a priority. The Baby Food Council – consisting of Beech-Nut Nutrition Company, Happy Family Organics, Earth’s Best, and Gerber Products Company and supported by Healthy Babies Bright Futures (HBBF), Cornell University and EDF – shares this goal and seeks to reduce heavy metals in the companies’ products to as low as reasonably achievable using best-in-class management practices.

Through the Council, EDF is coordinating a proficiency testing program to enable retailers, food manufacturers, ingredient suppliers, and others to identify laboratories that are capable of measuring arsenic, cadmium, and lead at levels in the low parts per billion (ppb). The Council has arranged for FAPAS, a leading proficiency testing provider for the food and water testing industries, to manage the testing program.

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EDF joins court challenge of FDA’s refusal to ban use of perchlorate in food contact materials

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: October 29, 2019

Tom Neltner, J.D., is Chemicals Policy Director and Maricel Maffini, Ph.D., Consultant

Today, EDF, represented by Earthjustice, joined with other public health advocates in filing a lawsuit to overturn the Food and Drug Administration’s (FDA) May 2017 decision, reaffirmed in April 2019 that allows the continued use of perchlorate[1], at concentrations up to 12,000 parts per million, in plastic packaging and processing equipment in contact with dry food. Perchlorate exposure is particularly dangerous for fetuses, infants, and young children, as it has been linked to developmental delays, reduced growth, and impaired learning capabilities. FDA relied on flawed reasoning while entirely ignoring important evidence developed by its own scientists revealing potentially serious risks resulting from ongoing use of perchlorate. We maintain that the intentional and unnecessary use of perchlorate in food contact materials should end.[2]

As with any litigation, we take this action reluctantly. We have long questioned FDA’s decisions that ignore evidence that endocrine disruptors like perchlorate can cause harm at levels the agency systematically dismisses as trivial. We have also pushed back on FDA’s decisions that allow toxic chemicals to be used in packaging and processing equipment that contact food ingredients multiple times from the farm to the grocery store shelf when the exposure estimate is based solely on the amount of the chemical that may migrate into food from the final product packaging. Agency assertions that its estimates are based on worst-case assumptions are misleading when they only consider a single contact. While FDA’s initial decision in November 2005 allowing the use of perchlorate-containing plastic raises all of these problems, the agency’s failure to address its own data and accompanying analysis by its own scientists that was published a decade later has left us with little choice but to act.

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Latest federal data on lead in food suggests progress made in 2016 was fleeting

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: October 3, 2019

Tom Neltner, J.D., Chemicals Policy Director and Maricel Maffini, Ph.D., Consultant

The Food and Drug Administration’s (FDA) Total Diet Study (TDS) is an important source of data for both the agency and the public to estimate exposure, track trends, and set priorities for chemical contaminants in food. EDF analyzed TDS data for samples the agency collected from 2003-2013 in our 2017 report to reveal that lead in food was a hidden health threat. In follow-up blogs using TDS data from 2014-2016, we reported that overall trends for detectable rates of lead appeared to be on the decline, especially in 2016. In our analysis, we summarized that the trends were both good news and bad news for children because there were stubbornly high rates of detectable lead in baby food teething biscuits, arrowroot cookies, carrots, and sweet potatoes.

In this blog, we analyze the latest lead in food TDS data, released by FDA in August, and we take a new look at the trends. Overall, the 2017 data reversed the progress in 2016, largely driven by the percent of samples[1] with detectable lead in prepared meals nearly doubling from 19% to 39%. The good news is that fruit juices continued their dramatic and steady drop in samples with detectable lead, from 67% in 2016 to 11% in 2017. When we compared results for baby foods to similar samples of regular fruits and vegetables, the most notable finding was that baby carrots and peeled and boiled carrots had significantly lower detection rates than baby food carrot puree. Additionally, we were surprised to find that 83 of 84 samples of canned fruit had detectable levels of lead.

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Too much cadmium and lead in kids’ food according to estimates by FDA

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: May 7, 2019

Tom Neltner, J.D., Chemicals Policy Director and Maricel Maffini, Ph.D., Consultant

The Food and Drug Administration (FDA) released a study in April estimating young children’s exposure to lead and cadmium from their diets and identifying food groups that are a significant source of these heavy metals. The study used data from the agency’s Total Diet Study (TDS) program for 2014 to 2016 and the Center for Disease Control and Prevention’s (CDC) What We Eat in America (WWEIA) Survey for 2009 to 2014.[1]

The study is a reminder of how pervasive heavy metals are in children’s diets and that, while the levels are relatively low, the cumulative exposure is significant. Based on FDA’s analysis (Table 1 below), we estimate that about 2.2 million children exceeded the agency’s maximum daily intake (MDI) for lead at a given time. The results for cadmium are new and worrisome, with estimated daily intake (EDI) levels that are 3 to 4 times greater than lead. And while FDA has not yet set an MDI limit for cadmium, the average young child exceeds most of the relevant daily exposure limits set by other agencies. Clearly, cadmium warrants greater attention, but note that the evidence of neurotoxicity is still emerging.

Table 1: Young children’s estimated dietary intake (EDI) of lead and cadmium based on FDA’s TDS results for years 2014 to 2016 (based on hybrid method)

Age GroupLead Mean EDI Lead 90th Percentile EDICadmium Mean EDICadmium 90th Percentile EDI
1-6 years1.8 µg/day2.9 µg/day6.8 µg/day11.0 µg/day
1-3 years1.7 µg/day2.6 µg/day5.8 µg/day9.7 µg/day
4-6 years2.0 µg/day3.1 µg/day7.8 µg/day12.1 µg/day
LimitsFDA’s MDI is 3.0No MDL set by FDA. Intake exceeded most limits set by other agencies

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Toxic chemicals can enter food through packaging. We made a list.

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: March 26, 2019

Boma Brown-West, Senior Manager, Tom Neltner, Chemicals Policy Director, and Michelle Harvey, Consultant.

This is the second in a series evaluating the challenges in single-use food packaging waste.

[pullquote]See our list of key chemicals of concern in food packaging.[/pullquote]In the late 1980s, the Council of Northeast Governors (CONEG) was concerned that heavy metals in packaging would accumulate in recycled materials to levels that presented serious health concerns. The organization drafted model legislation that prohibited the intentional addition of mercury, lead, cadmium, and hexavalent chromium to any component of packaging, including inks. It also set a 100 parts-per-million limit on the total amount of these four heavy metals. To ensure compliance, companies making packaging materials had to provide certificates of compliance to downstream purchasers and report compliance to the states.

CONEG also established the Toxics in Packaging Clearinghouse to maintain the model legislation, coordinate implementation of state legislation, and serve as a resource for companies seeking compliance information. The Council’s hypothesis: protecting virgin material from contamination will improve the recyclability of post-consumer materials and protect public health.

Over the years, 19 states have adopted a variation of the model legislation.  In 2018, the State of Washington took an unprecedented step of expanding its version of the legislation from heavy metals to include per- and poly-fluorinated alkyl substances (PFAS). PFAS are bioaccumulating, persistent chemicals and are associated with an array of health problems including endocrine disruption and children’s developmental harm. The State was concerned that paper and cardboard food packaging treated with these chemicals may be contaminating composting and paper recycling processes post-consumer.

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