5 doctors weighed in:

How does food become contaminated?

5 doctors weighed in
Dr. Charles Cattano
Internal Medicine - Gastroenterology
3 doctors agree

In brief: Food contamination

Food can be contaminated at any step in preparing it for eating: 1) "pre-market" due to exposure of crops, animals, fish to sewage or toxins; 2) "at production" due to unsanitary storage and preparation facilities or ill food handlers; 3) "post-market" due to inadequate cooking and naive handling & preparation of raw foods; 4) "at storage" after foods have been prepared but before consumption.

In brief: Food contamination

Food can be contaminated at any step in preparing it for eating: 1) "pre-market" due to exposure of crops, animals, fish to sewage or toxins; 2) "at production" due to unsanitary storage and preparation facilities or ill food handlers; 3) "post-market" due to inadequate cooking and naive handling & preparation of raw foods; 4) "at storage" after foods have been prepared but before consumption.
Dr. Charles Cattano
Dr. Charles Cattano
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Dr. Chan Hwang
Physical & Rehabilitation Medicine

In brief: Food contamination

can result from washing even "organic" produce with water contaminated by animal manure or by other contact with animals.
Another source is when a food handler fails to wash his hands. Inadequate food preparation at home or at a restaurant is another way that food can become contaminated. Food that is old such as left overs, even if refrigerated, can breed microbes. "When in doubt, throw it out!"

In brief: Food contamination

can result from washing even "organic" produce with water contaminated by animal manure or by other contact with animals.
Another source is when a food handler fails to wash his hands. Inadequate food preparation at home or at a restaurant is another way that food can become contaminated. Food that is old such as left overs, even if refrigerated, can breed microbes. "When in doubt, throw it out!"
Dr. Chan Hwang
Dr. Chan Hwang
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