Zearalenone is a mycotoxin produced by certain molds, particularly those in the Fusarium genus. It commonly contaminates crops like corn and wheat, especially in warm and humid conditions. This toxin can affect livestock, leading to reproductive issues and other health problems. In humans, exposure to zearalenone is less common but can occur through the consumption of contaminated food. It mimics the hormone estrogen, which can disrupt normal hormonal functions. Regulatory agencies monitor levels of zearalenone in food products to ensure safety and protect public health.