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Food Poisoning: Causes, Symptoms, Treatment



Food Poisoning

Food poisoning is a common and often uncomfortable gastrointestinal condition caused by the consumption of contaminated food or beverages. This article provides an overview of its causes, symptoms, and available treatment options.


  • Bacterial Contamination: Most cases of food poisoning are caused by bacteria like Salmonella, E. coli, Campylobacter, and Listeria. These bacteria can multiply in improperly cooked or stored foods.
  • Viral Infections: Viruses, such as norovirus and rotavirus, can also lead to food poisoning and are highly contagious. They can be transmitted through contaminated food, water, or contact with infected individuals.
  • Parasites: Parasites like Giardia or Cryptosporidium can contaminate water sources and cause food poisoning when ingested. Refer to a Best Gastroenterologist in Lahore for more information.
  • Toxins and Chemicals: Toxins produced by certain types of bacteria, like Staphylococcus aureus, or the presence of harmful chemicals in food can lead to food poisoning.
  • Cross-Contamination: Food can become contaminated if it comes into contact with surfaces, utensils, or hands that have been in contact with raw, contaminated foods.
  • Improper Food Handling: Poor food handling practices, such as not refrigerating perishable foods promptly, undercooking meat and poultry, or failing to wash hands, can contribute to foodborne illnesses.


The symptoms of food poisoning can vary depending on the causative agent but commonly include:

  • Nausea and vomiting
  • Diarrhea
  • Abdominal pain and cramps
  • Fever
  • Muscle aches
  • Headaches
  • Weakness and fatigue

Symptoms typically appear within hours to days after consuming contaminated food or beverages and can last anywhere from a few hours to several days. In severe cases, dehydration, high fever, and bloody diarrhea may occur, requiring medical attention.


  • Stay Hydrated: One of the primary concerns with food poisoning is dehydration due to vomiting and diarrhea. Consume clear fluids, electrolyte solutions, or oral rehydration solutions to maintain proper hydration.
  • Rest: Get plenty of rest to help your body recover.
  • Avoid Certain Foods: Stay away from solid foods while experiencing symptoms, and reintroduce them gradually as your condition improves.
  • Antibiotics (if bacterial): In cases of severe bacterial food poisoning or specific infections, antibiotics may be prescribed by a healthcare provider.
  • Medical Attention: Seek medical help if symptoms are severe, persistent, or if you experience high fever, bloody diarrhea, or signs of dehydration.
  • Preventive Measures: To avoid food poisoning, practice safe food handling and storage, cook foods to appropriate temperatures, and maintain good personal hygiene. Be cautious of the food and water quality when traveling.

Food poisoning can be a distressing experience, but it is usually self-limiting and resolves with proper home care. However, it’s crucial to be aware of the symptoms and seek medical attention if needed, especially for severe cases. Taking preventive measures to ensure food safety can significantly reduce the risk of food poisoning. Consult a Gastroenterologist in Karachi in case you need a medical assessment. 

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