The flu is a viral illness that spreads quickly and easily and affects millions of people around the world. The symptoms associated with the flu can often lead to weight loss--some permanent, some temporary. Weight loss from the flu is not healthy. The body suffers from weight loss that is sudden, and the flu can cause this type of unhealthy weight loss. When possible, take the necessary steps to ensure that it doesn't occur.
Dehydration
Both vomiting and diarrhea expel fluids necessary for the body to function properly. When the body starts getting rid of fluids that belong in the body, dehydration occurs. These fluids and their weight disappear in the course of vomiting and diarrhea.
Loss of Appetite
Because stomach flu causes vomiting and diarrhea, it is common for the appetite to disappear. This lack of appetite and the resulting deficient calorie intake result in weight loss.
Considerations
Weight loss from the flu is usually temporary. Once the diarrhea and vomiting disappear, the water weight comes back. After the stomach upset stops, there is sometimes an appetite increase because of an empty stomach. Eating an increased number of calories can help you regain of the weight lost from the flu.
Prevention/Solution
To prevent weight loss from the flu, drink beverages that contain calories, such as lemon-lime soda. Eat or drink broth-based soups or broth alone. Make sure to take in plenty of fluids overall to prevent dehydration.
Warning
Prolonged vomiting and diarrhea warrant a call to the doctor. Severe weight loss indicates a major problem, and the need to see a doctor immediately.
