Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Lead released from African cookware contaminates food


Lead levels in foods prepared in aluminum pots from Cameroon exceed US guidelines for lead consumption

Lead levels in foods prepared in aluminum pots from Cameroon exceed U.S. guidelines for lead consumption according to a new study published this month. A typical serving contains almost 200 times more lead than California's Maximum Allowable Dose Level (MADL) of 0.5 micrograms per day.

Dr. Jeffrey Weidenhamer, professor of chemistry at Ashland University and an author of the study, discusses research results with Ashland University senior Peter Kobunski, a biochemistry major from Nashport, Ohio.

Credit: Ashland University EagleEye Photography

Researchers at Ashland University and Occupational Knowledge International tested 29 samples of aluminum cookware made in Cameroon and found almost all had considerable lead content. This cookware is common throughout Africa and Asia and is made from recycled scrap metal including auto and computer parts, cans, and other industrial debris.

The study, "Lead Exposure from Aluminum Cookware in Cameroon," was conducted in partnership with the Cameroonian NGO Research and Education Centre for Development (CREPD) and published in the August issue of the journal of Science of the Total Environment.

There are no regulatory standards for lead in cookware but the World Health Organization (WHO) and the U.S. Centers for Disease Control have determined that there is no safe level of exposure to lead.

"This previously unrecognized lead exposure source has the potential to be of much greater public health significance than lead paint or other well-known sources that are common around the world." said Perry Gottesfeld, Executive Director or Occupational Knowledge International.

Recently conducted surveys of lead exposure in Africa and Asia have suggested that blood lead levels have remained stubbornly elevated despite the ban on lead in gasoline in most of the world. "The presence of lead in food cooked in these pots may be one contributing factor to the ongoing lead poisoning epidemic." Gottesfeld said.

"Unlike some other sources of lead contamination, lead poisoning from cookware can impact entire families over a life-time. Even low-level lead exposures can result in reduced IQ and neurological deficits, and contribute to cardiovascular disease." according to Jeffrey Weidenhamer, Professor of Chemistry at Ashland University and an author of the study.

The investigation simulated cooking by boiling acidic solutions in the cookware for two hours and measuring the lead extracted in solution. The researchers also found significant levels of aluminum and cadmium leached from the cookware along with the lead.

According to Gilbert Kuepouo, Executive Director of CREPD and an author of the study, "These locally made aluminum pots are the most commonly used in Cameroon and throughout Africa, so the lead levels we found are alarming and a threat to public health."

In the past aluminum from cookware and other sources was cited as a possible cause of Alzheimer's disease but multiple studies have failed to identify a consistent link. Although the U.S. has set limits for lead leaching from ceramic ware, no regulations address lead exposures from aluminum or other cookware.

Lead exposure in children is linked to brain damage, mental retardation, lower educational performance, and a range of other health effects. Globally lead accounts for more than 674,000 deaths per year.


The article is available online at:

About Occupation Knowledge International

OK International is a nonprofit organization based in San Francisco that works to build capacity in developing countries to identify, monitor, and mitigate environmental and occupational exposures to hazardous materials in order to protect public health and the environment. The organization seeks to address inequities in environmental standards between developed and developing countries by working in partnership with industry, government and non-governmental organizations (NGOs). For more information, visit

About Ashland University

Ashland University, which has been ranked in the top 200 colleges and universities in U.S. News and World Report's National Universities category, is a mid-sized, private university conveniently located a short distance from Akron, Cleveland and Columbus, Ohio. Ashland University values the individual student and offers a unique educational experience that combines the challenge of strong, applied academic programs with a faculty and staff who build nurturing relationships with their students.


CREPD is a Cameroon based NGO that focuses on health and environmental issues in collaboration with government, industry, and non-governmental organizations. CREPD specializes in promoting sustainable development through the sound management of chemicals and hazardous waste, sustainable agriculture, and responsible mining. CREPD is one of the foremost organizations involved in international negotiations on chemical safety. For more information, visit

Perry Gottesfeld | Eurek Alert!

Further reports about: Aluminum Cookware cadmium contamination exposure levels neurological deficits

More articles from Materials Sciences:

nachricht How nanoscience will improve our health and lives in the coming years
27.10.2016 | University of California - Los Angeles

nachricht 3-D-printed structures shrink when heated
26.10.2016 | Massachusetts Institute of Technology

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Novel light sources made of 2D materials

Physicists from the University of Würzburg have designed a light source that emits photon pairs. Two-photon sources are particularly well suited for tap-proof data encryption. The experiment's key ingredients: a semiconductor crystal and some sticky tape.

So-called monolayers are at the heart of the research activities. These "super materials" (as the prestigious science magazine "Nature" puts it) have been...

Im Focus: Etching Microstructures with Lasers

Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.

This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Prototype device for measuring graphene-based electromagnetic radiation created

28.10.2016 | Power and Electrical Engineering

Gamma ray camera offers new view on ultra-high energy electrons in plasma

28.10.2016 | Physics and Astronomy

When fat cells change their colour

28.10.2016 | Life Sciences

More VideoLinks >>>