What is the biggest cause of foodborne illness?

Bacteria, viruses, parasites, or substances made by germs can enter food or water at several points, including preparation, storage, cooking, or serving. Food may look, smell, and taste normal even when it is unsafe. Cross-contamination can happen when raw food, dirty hands, utensils, or surfaces transfer germs to ready-to-eat food.

Foodborne illness can cause diarrhoea, nausea, vomiting, abdominal pain, or fever. A person with food poisoning may have only one symptom or several, and symptoms can begin soon after exposure or later depending on the contaminant. The illness is often short-lived, but fluid loss can become the main concern.

Take small, frequent sips of water or an oral rehydration solution, especially after vomiting or loose stools. Oral rehydration therapy replaces fluid and salts more effectively than relying on large drinks at once. Rest, and return to light foods when you feel able. Avoid preparing food for other people while you have vomiting or diarrhoea, and wash your hands carefully with soap and water.

Do not start antibiotics without medical advice; they are not useful for every cause of foodborne illness. A clinician may recommend different care after considering your symptoms, examination, and any relevant exposure. IV fluid therapy may be considered when dehydration prevents you from drinking enough.

Seek urgent help if you cannot keep fluids down, feel faint or confused, pass very little urine, have severe or worsening abdominal pain, or notice blood in vomit or stool. A high fever, marked weakness, or signs of dehydration also warrants prompt assessment. Arrange medical advice sooner for a young child, an older adult, pregnancy, or a condition that makes dehydration more dangerous.

Ask what cause best fits your symptoms, whether you need testing, how much fluid to take, and which medicines are safe for you. Mention when symptoms began, what you ate or drank, whether anyone else became ill, and any recent travel or antibiotic use.