Traveler's diarrhea is a common digestive issue that affects people traveling to new regions, especially in areas with different sanitation standards. It is often caused by consuming contaminated food or water, leading to symptoms like loose stools, abdominal cramps, and nausea. Most cases are mild and resolve within a few days without treatment. Staying hydrated is crucial, and over-the-counter medications can help alleviate symptoms. To prevent it, travelers should practice good hygiene and be cautious about what they eat and drink, particularly in countries with known risks for traveler's diarrhea.