Fungal toxins, also known as mycotoxins, are toxic compounds produced by certain types of fungi. These toxins can contaminate food and feed, posing health risks to humans and animals. Common sources include Aspergillus, Penicillium, and Fusarium species, which can grow on crops like grains, nuts, and fruits. Exposure to fungal toxins can lead to various health issues, including acute poisoning and long-term effects such as cancer or immune system damage. Regulatory agencies monitor and set limits for mycotoxin levels in food products to ensure safety and protect public health.