How do high risk foods support the growth of pathogens?

High-risk foods support the growth of pathogens primarily because they are high in moisture and nutrients. Foods such as meat, dairy products, and certain cooked vegetables provide the ideal environment for bacteria, viruses, and fungi to multiply. Moisture is crucial for microbial growth, as most pathogens thrive in conditions with adequate water activity. Additionally, the nutrient content of these foods, which includes proteins, fats, and carbohydrates, further fuels the growth of pathogens, enabling them to reproduce rapidly.

While cooking foods at high temperatures can kill pathogens, improper storage is a factor that can lead to contamination rather than directly supporting growth. The inclusion of preservatives typically helps to inhibit the growth of microorganisms, rather than support it. Therefore, the combination of high moisture and nutrient content is what makes certain foods particularly susceptible to the proliferation of harmful microorganisms.