Do you lose nutrients & calories when you have diarrhea?

Yes, when you have diarrhea, you can lose both nutrients and calories. Here's how it affects your body:

1. Nutrient Loss: Diarrhea results in the rapid movement of food through the digestive system, which reduces the time available for nutrient absorption. This means that you may lose some of the nutrients from the food you consume, including vitamins, minerals, and macronutrients like carbohydrates, proteins, and fats12.

2. Calorie Loss: While diarrhea primarily affects nutrient absorption rather than directly causing calorie loss, the reduced absorption of macronutrients can indirectly lead to a decrease in calorie intake. Additionally, if you are experiencing diarrhea, you might consume fewer calories due to decreased appetite or avoiding certain foods2.

3. Fluid and Electrolyte Loss: Diarrhea also leads to significant fluid and electrolyte loss, including sodium, chloride, and potassium. This can cause dehydration, which is a more immediate concern than nutrient loss45.

To manage diarrhea and minimize nutrient and calorie loss, it's important to stay hydrated with fluids and electrolyte-rich beverages, and to consume small, frequent meals of easily digestible foods5.