How Bacteria Grow on Cooked Rice
Cooked rice provides moisture, starch, and warmth that allow bacteria to multiply quickly. When rice is left at room temperature, spores of Bacillus cereus can germinate and produce toxins that cause vomiting or diarrhea.
Safe Storage and Reheating Practices
Refrigerate cooked rice within two hours and keep it below 40°F (4°C). Reheat rice to at least 165°F (74°C) and avoid leaving it in a rice cooker on the warm setting for many hours.
Symptoms and When to Seek Help
Symptoms of rice-related food poisoning usually appear within one to five hours and include nausea, stomach cramps, and diarrhea. Most cases resolve on their own, but persistent vomiting or signs of dehydration require medical attention. For more on foodborne illness prevention, visit the U.S. Centers for Disease Control and Prevention at CDC Food Safety.
