Food safety

Definition

Food safety refers to the conditions and practices that preserve the quality of food. These practices prevent contamination and foodborne illnesses.

Alternative Names

Food - hygiene and sanitation

Function

Food can be contaminated in many different ways. Some food products may already contain bacteria or parasites. These germs can be spread during the packaging process if the food products are not handled properly. Improperly cooking, preparing, or storing food can also cause contamination.

Properly handling, storing, and preparing food greatly reduces the risk for getting foodborne illnesses.

Food Sources

All foods can become contaminated. Higher risk foods include red meats, poultry, eggs, cheese, dairy products, raw sprouts, and raw fish or shellfish.

Side Effects

Poor food safety practices can lead to foodborne illness. Symptoms of foodborne illnesses vary. They usually include stomach problems or stomach upset, including nausea, vomiting, and/or diarrhea. Foodborne illnesses may be severe and fatal. Young children, older adults, pregnant women, and people who have a weakened immune system are especially at risk.

Recommendations

If your hands have any cuts or sores, wear gloves suitable for handling food or avoid preparing food. To reduce your risk for foodborne illness, you should wash your hands thoroughly:

To avoid cross-contaminating food items you should:

To reduce chances of food poisoning, you should:

References

Ochoa TJ, Chea-Woo E. Approach to patients with gastrointestinal tract infections and food poisoning. In: Cherry JD, Harrison GJ, Kaplan SL, Steinbach WJ, Hotez PJ, eds. Feigin and Cherry's Textbook of Pediatric Infectious Diseases. 8th ed. Philadelphia, PA: Elsevier; 2019:chap 44.

United States Department of Agriculture. Food safety. www.fsis.usda.gov/food-safety. Updated October 21, 2020. Accessed May 7, 2024.

United States Department of Agriculture. Safe food handling and preparation. www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation. Updated February 17, 2021. Accessed May 7, 2024. 

United States Department of Health and Human Services. Food safety by type of food. www.foodsafety.gov/keep-food-safe/food-safety-by-type-food. Updated April 1, 2019. Accessed May 7, 2024. 

United States Department of Health and Human Services. Food safety in a disaster or emergency. www.foodsafety.gov/keep-food-safe/food-safety-in-disaster-or-emergency. Updated September 20, 2023. Accessed May 7, 2024.

Wong KK, Griffin PM. Foodborne disease. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 9th ed. Philadelphia, PA: Elsevier; 2020:chap 101.


Review Date: 5/4/2024
Reviewed By: Stefania Manetti, RDN, CDCES, RYT200, My Vita Sana LLC - Nourish and heal through food, San Jose, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
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