Food poisoning is a common illness caused by eating contaminated food. Contamination can occur at any stage of food preparation or storage, and may be caused by:
- Bacteria
- Viruses
- Parasites
- Mold
- Toxins
- Other impurities
Most cases of food poisoning are mild, but some can become serious depending on the contaminant and the person affected.
Symptoms of Food Poisoning
Symptoms can vary depending on the type of contamination and how much was consumed. In many cases, symptoms appear within hours to a few days after eating contaminated food.
Common symptoms include:
- Upset stomach
- Stomach cramps
- Nausea
- Vomiting
- Diarrhea
- Fever
- Dehydration
While food poisoning can resolve on its own, symptoms can become severe, especially in young children, older adults, pregnant individuals and people with weakened immune systems.
What To Do If You Suspect Food Poisoning
If you think you may have food poisoning:
- Contact your health provider for medical advice, especially if symptoms are severe or persistent.
- Report the illness to your local health department. Reporting helps public health officials identify potential outbreaks and protect others from exposure.
Seek medical attention immediately if symptoms include severe dehydration, persistent vomiting, high fever or blood in stool.
Preventing Food Poisoning
Safe food handling, storage and cooking are the best ways to reduce your risk for food poisoning.
Tips for preventing food poisoning:
- Store foods at safe temperatures.
- Keep raw and cooked foods separate to avoid cross-contamination.
- Wash hands, utensils, and surfaces before and after handling food.
- Cook foods to recommended safe internal temperatures.
- Refrigerate leftovers promptly.
For detailed guidance on proper cooking and storage temperatures, visit the food safety charts provided by the U.S. government at
FoodSafety.gov/Food-Safety-Charts
Practicing safe food habits helps protect you and your family from food poisoning and keeps meals safe to enjoy.