What should you know about diet for food poisoning?

Food poisoning can cause diarrhoea, vomiting, abdominal pain, nausea, and fever. These symptoms can remove fluid and salts from the body, sometimes faster than thirst signals appear. An oral rehydration solution can replace both water and electrolytes when losses are significant. Food may be less important than drinking during the early phase, but prolonged fasting can leave you weak. Once vomiting settles, the digestive system often tolerates small portions better than a heavy meal. The illness may need assessment if symptoms are severe, prolonged, or affect a vulnerable person.

Take small, frequent sips of water or oral rehydration solution. If you vomit, pause briefly and restart with smaller sips. When ready, try plain rice, toast, bananas, soup, potatoes, yoghurt, or another familiar low-fat food, then widen your choices as appetite returns. Avoid alcohol and limit very fatty foods if they worsen nausea. Wash hands carefully and avoid preparing food for others while diarrhoea or vomiting continues. Ask a pharmacist or clinician about rehydration products if you have kidney disease, heart failure, diabetes, or fluid restrictions.

Seek medical advice for inability to keep fluids down, very little urine, dizziness, unusual drowsiness, blood in stool or vomit, severe abdominal pain, or a high or persistent fever. Children, older adults, pregnant people, and those with significant medical conditions can become dehydrated quickly. Urgent care may be needed for confusion, collapse, or severe weakness. IV fluid therapy may be considered when oral hydration is not enough.

Which fluids are suitable for me? How can I tell whether I am dehydrated? When can I return to normal food and work? Do I need testing or treatment for this illness?