What commonly leads to gastroenteritis?

Gastroenteritis is commonly caused by the ingestion of contaminated food or water, which can introduce viruses, bacteria, or parasites into the digestive system. This condition leads to inflammation of the stomach and intestines, resulting in symptoms such as diarrhea, vomiting, abdominal pain, and nausea. The pathogens involved, including norovirus and rotavirus, are often spread through contaminated sources, making food safety and hygiene critical in preventing outbreaks.

Excessive exercise, food allergies, and cold weather do not typically lead to gastroenteritis. While an intense physical activity can cause gastrointestinal discomfort or distress, it does not cause inflammation due to infection. Food allergies can result in symptoms like nausea and abdominal pain, but these are more related to an immune response rather than an infection. Cold weather also does not directly cause gastroenteritis, although it might increase the likelihood of transmission of viral pathogens in confined settings during winter months. Thus, the primary and most recognized cause remains contaminated food or water.