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Contamination 
Contamination
Bacteria (e.g., Staphylococcus aureus, Clostridium botulinum) enter food through unhygienic conditions or infected food.
Cultivation and growth 
Cultivation and growth
The bacteria multiply under suitable conditions (e.g., temperature, humidity, Hint:FATTOM), causing their numbers in the food to increase.
Toxin production
Toxin production
Certain bacteria produce toxins during reproduction, e.g., heat-resistant toxins in Staphylococcus aureus.
Toxin accumulation in food
Toxin accumulation in food
The toxins accumulate in the food and are often present in large quantities, while the bacteria themselves may already have been killed.
Consumption of contaminated food
Consumption of contaminated food
When consumed, the toxins enter the human body.
Disease development
Disease development
The toxins act in the body, leading to food-related illnesses, e.g., food poisoning.