What should you know about worst food poisoning?

Food poisoning is an illness after eating or drinking something contaminated with germs or their toxins. Symptoms may begin with nausea, cramping, vomiting, loose stools, fever, or a general unwell feeling. The main short-term danger is dehydration: the body loses water and salts through diarrhoea, vomiting, sweating, and poor intake. A dry mouth, strong thirst, dizziness when standing, dark urine, passing very little urine, or unusual drowsiness can suggest that fluid replacement is not keeping up. Young children, older adults, pregnant people, and people with a weakened immune system should be assessed earlier when symptoms are significant.

Take frequent small sips of water or an oral rehydration drink. If vomiting happens, pause briefly and restart with tiny amounts rather than forcing a large drink. Eat only when you feel able, choosing simple foods you can tolerate. Rest, wash hands carefully after using the toilet, and avoid preparing food for other people while unwell. Do not use leftover antibiotics or another person's medicine. A pharmacist or clinician can advise about symptom medicines and whether they are suitable for you.

Seek urgent medical assessment for blood in vomit or stool, severe or steadily worsening abdominal pain, a stiff neck, confusion, fainting, or signs of substantial dehydration. Get prompt advice if you cannot keep fluids down, fever is persistent, or diarrhoea continues without improvement. Emergency care is appropriate when you are hard to wake, very weak, or unable to drink. A clinician may assess hydration, examine your abdomen, and arrange treatment such as fluids through a vein when oral fluids are not enough.

Ask whether your symptoms suggest dehydration, which drinks are suitable, and whether testing is needed. Tell the clinician about recent travel, shared meals, contact with anyone else who is unwell, and any medicines or health conditions that affect your immune system. Ask when you can return to work, school, or food preparation.