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Yes, boiling food kills most bacteria and viruses, but heat-resistant spores and toxins may survive.

Yes, blue food coloring can tint stool blue or green for a day or two, most often after icing, drinks, or snacks containing FD&C Blue No. 1.

Yes, blue food coloring can cause diarrhea in sensitive people or after large amounts, though FDA-approved dyes are generally tolerated.

Yes, blue food dyes can tint stool green by mixing with bile pigments as they pass through your gut.

Yes, blood work can spot complications and some infections, but stool tests usually confirm food poisoning.

No, blood tests can’t show food intolerance; they find allergies or celiac markers, while intolerance needs diet trials or breath tests.

Yes, blood tests can flag IgE-mediated food allergies, but diagnosis relies on history and, if needed, supervised oral challenges.

Yes, blood tests can detect some food poisoning cases, especially bloodstream infections, but stool testing finds most gut pathogens.

No, blood in food does not cause HIV transmission; HIV breaks down fast, and eating isn’t a route for this virus.

Yes, blackberries can cause food poisoning when contaminated with germs; washing and safe handling cut risk.