Scientists have issued warning regarding a common ingredient used in many types of cheese, raising concerns about its potential effects on human health. The ingredient in question is natamycin, a food additive.
What Is Natamycin and Why Is It Used?
Natamycin is an antifungal preservative that’s been approved for use in food in many countries. It’s commonly sprayed on cheese surfaces or added to food products to prevent mold growth. Its purpose is to extend shelf life and reduce food waste, which makes it a go-to choice for many food manufacturers. While it has long been considered safe for human consumption in small amounts, new research is raising concerns about the possible long-term impact of regular exposure.
New Research Raises Red Flags
In a study published by researchers at the University of Kansas, scientists warn that overexposure to natamycin could potentially disrupt the human gut microbiome—the complex system of bacteria and microbes in the digestive system that plays a crucial role in overall health. According to the findings, while natamycin is effective at killing off harmful fungi, it may also impact the beneficial microorganisms that are essential for digestion, immunity, and even mood regulation. Over time, this disruption could lead to various health complications, including digestive disorders, weakened immunity, and increased inflammation.
Cheese Is Not the Only Concern
Although cheese is one of the most common foods containing natamycin, it’s not the only source. The preservative can also be found in products such as yogurt, cured meats, and baked goods, as well as in certain soft drinks and packaged foods. The researchers warn that the cumulative effect of consuming multiple foods with natamycin could lead to levels that have not been thoroughly studied in humans.
“Our concern is not just with cheese,” one of the lead scientists stated. “It’s the broader pattern of overexposure through various processed foods that may put people at risk without them even knowing it.”
Calls for Stricter Regulation and Label Transparency
The researchers are urging food safety regulators to re-evaluate current guidelines surrounding the use of natamycin in consumer products. They are also calling for clearer food labeling, so that consumers can make more informed choices.
Many health experts support this move, noting that consumers are often unaware of the hidden preservatives and additives in their everyday foods. Clear labeling could help individuals avoid unnecessary intake of synthetic preservatives, particularly those with emerging health concerns.
Should You Stop Eating Cheese?
Health experts emphasize that occasional consumption of cheese or other products with natamycin is not immediately dangerous. However, they recommend moderation and variety in the diet, and suggest opting for natural or organic dairy products when possible—those that contain fewer synthetic additives and preservatives. For those concerned, it’s worth checking ingredient labels or speaking with a nutritionist about how to reduce processed food intake.
Final Thoughts: Stay Informed, Eat Smart
As with many food safety issues, awareness is key. While natamycin may not pose an acute risk, the growing body of research around its long-term effects is reason enough to stay cautious. By reading labels, choosing fresh foods, and staying updated on food science developments, consumers can make better decisions for their health and wellbeing.
