Pregnant women who consume significant amounts of corn and grain-based products may be at increased risk of exposure to mycotoxins, potentially linked to various health issues, including cancer. A recent study conducted by researchers at Rutgers University highlighted concerning findings regarding the prevalence of these toxins, which are produced by certain moulds and fungi.
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The study, published in the *Journal of Exposure Science & Environmental Epidemiology*, involved 33 pregnant women from New Jersey. Researchers discovered that every urine sample analysed contained mycotoxins, specifically indicating that higher levels corresponded directly with the intake of corn and grain products such as popcorn, corn chips, and tortillas.
Mycotoxins, according to the World Health Organization (WHO), are toxic compounds that can grow on a variety of food items, including cereals, nuts, dried fruits, and even coffee beans. The implications of exposure range from acute poisoning to long-term health concerns such as cancer and immune deficiencies.
Researchers particularly focused on a mycotoxin known as zearalenone, which is produced by fungi of the Fusarium species. This toxin is known to contaminate staple crops in the U.S. such as corn, wheat, and oats. Alarmingly, zearalenone is capable of surviving high temperatures, allowing it to persist in processed foods and animal products sourced from livestock fed contaminated feed.
Zearalenone is of particular interest due to its classification as a mycoestrogen, a substance that mimics the hormone estrogen. This is significant, as estrogen plays a critical role in fetal development during pregnancy. Studies have suggested that exposure to mycoestrogens may be associated with increased weight gain during pregnancy and lower birth weights in infants, raising further concerns about their effects on maternal and child health.
Dr Zorimar Rivera-Núñez, the lead author of the study and an assistant professor at the Rutgers School of Public Health, highlighted the dearth of research in the U.S. examining the dietary sources of mycoestrogens. She noted, “Mycoestrogens are among the most common food contaminants worldwide, yet evidence on their dietary sources in the United States has been limited.” The findings from this pilot study represent one of the first attempts to correlate food intake with mycoestrogen biomarkers specifically in pregnant women.
The research also comes in light of the U.S. Food and Drug Administration’s (FDA) recent inclusion of zearalenone in its Mycotoxin Compliance Program. However, no maximum limits for this toxin have been established in food products thus far, leading researchers to call for heightened awareness regarding the presence of mycotoxins in everyday foods.
“Pregnancy represents a unique opportunity for prevention,” Rivera-Núñez explained. “By understanding how everyday dietary choices contribute to environmental chemical exposures, we can provide families with information that supports both maternal and child health.” The importance of addressing these concerns cannot be overstated, particularly considering the potential long-term health impacts on both mothers and their children.
In light of these findings, the WHO advises that individuals inspect whole grains, dried fruits, and nuts for any signs of mould. Items that appear discoloured or shrivelled should be discarded, and fresh products are recommended. Proper storage in cool, dry conditions away from insects can also reduce the risk of mycotoxin exposure.
While additional research is needed, the current study underscores a pressing issue related to dietary habits and health during pregnancy. This new data highlights the necessity for more stringent regulations and greater public awareness surrounding food safety concerning mycotoxins, especially for vulnerable populations such as pregnant women.