To treat diarrhea, it is important to stay hydrated by drinking plenty of fluids. Avoiding foods that can worsen diarrhea, such as greasy or spicy foods, is also recommended. Over-the-counter medications can help alleviate symptoms, but it is best to consult with a healthcare provider for a proper evaluation and treatment plan. Keeping a food journal can help identify any triggers that may be causing the diarrhea. It's always important to seek medical advice if diarrhea persists or worsens.