environmental pollution

August 2, 2023

Worrisome levels of potentially cancer-causing metal found in children’s diets

By Grace van Deelen

Young children are being exposed to a potentially cancer-causing heavy metal known as cadmium through many of the foods they eat, often at levels that exceed safety standards, according to a new study.

Cadmium has been shown to contaminate water, air and crops, including a range of foods considered healthy that are used in baby food. The study, which was published last week in the journal Food and Chemical Toxicity, found that the cumulative average daily levels of cadmium ingested by children were higher than daily cadmium intake levels considered safe by the US Agency for Toxic Substances and Disease Registry (ATSDR).

For instance, children between 6 months and 24 months who consumed spinach and rice at least once a week ingested cadmium that exceeded the ATSDR guidelines by up to 200%, the study determined. The authors of the study warned that the findings are particularly concerning because the bodies of young children are still developing, and may be more susceptible to the effects of heavy metal exposure.

The study comes after a 2021 US Congressional report showed dangerous levels of metals in infant food, prompting the US Food and Drug Administration (FDA) to launch a research and action plan to assess the risks of heavy metals in foods.

A woman with a shaved head pulls back a curtain in a hospital room.

April 14, 2023

The ravages of cancer and a new fight for prevention

A growing understanding that exposure to certain chemicals in the environment may be a huge contributor to rising cancer rates has led to a new coalition of scientists and advocates working to alert the public and push regulators to protect people from carcinogens.

In her upcoming book, A New War on Cancer: The Unlikely Heroes Revolutionizing Prevention, award-winning journalist Kristina Marusic profiles the efforts of those working to advance cancer prevention. The book weaves intimate stories from those dealing with cancer, inspiring work from scientists working to understand chemical exposures, and important context about the ways the US deals with cancer and chemical regulation.

The New Lede sat down with Marusic to discuss why preventing environmental exposures is the next big step in the war against cancer.

November 7, 2022

New PFAS exposure scoring method could speed research on health effects

Researchers have developed a new statistical tool they say could speed up research on the health effects of exposures to toxic “forever chemicals” that are commonly found in an array of consumer products.

In a study published last week in Environmental Health Perspectives, researchers from the Mount Sinai Medical Center and Johns Hopkins School of Public Health presented a new tool that offers PFAS researchers a way to compare total exposures to PFAS across scientific studies. The tool may provide researchers a more effective method to study these persistent toxins.

PFAS, an acronym for per- and polyfluoroalkyl substances, are a class of thousands of chemicals commonly used in non-stick cookware, food packaging, and waterproof clothing. The chemicals have been linked to certain cancers and reproductive issues.

Studying chemical mixtures is crucial to public health research, since people are exposed to many chemicals—including many types of PFAS—at once in their daily lives. But most studies that focus on toxic chemical mixtures only study those effects in relation to specific health outcomes; for example, a study might determine a chemical’s effect on blood pressure, or heart disease. Additionally, studies might measure different types of PFAS chemicals. That makes it hard for environmental health researchers to compare data.