This key in of weight loss, however, isn’t usually permanent.
You may also experience nausea,fever, stomach cramps, and exhaustion.
These symptoms can be brought on by several different types of viruses, bacteria, or even parasites.

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This drastic change in fluid volume in your body can show up on the scale.
If your symptoms last for several days, the weight change can be significant.
Can you lose weight while sick with COVID-19 or a cold?
This is because when you are vomiting, you aren’t losing fat.
Vomiting anddiarrheaare the symptoms of the illnessyour body’s defense against the germs.
It eliminates any food and liquid in your digestive tract in an attempt to kill those germs.
What illness causes rapid weight loss?
Complications
The biggest risk and concern with the stomach flu for most people is dehydration.
This is more likely to occur in young infants and children as well as older adults.
If you are unable to hold any amount of fluids down, contact your healthcare provider.
There are medications you may be able to take to stop vomiting.
If dehydration is severe enough, you may need IV fluids to recover.
If you are ever with someone who feels like dehydrated and loses consciousness, seek medical help immediately.
Do not venture to give an unconscious person anything to drink.
Most cases of gastroenteritis go away on their own after a day or two.
Because stomach illnesses are most often brought on by viruses, antibiotics won’t work.
The best thing you’re free to do is to avoid getting sick in the first place.
Washing your hands is essential.
The weight loss is usually resulting from temporary loss of fluids.
You will usually gain the weight back once you are able to eat and drink normally again.
If you have signs of dehydration after a gastrointestinal illness, it’s important to seek medical attention.
You may require additional treatment to stop vomiting and fluids to manage dehydration.
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