Feeling like throwing up (nausea) happens when your stomach feels unsettled, often leading to vomiting. It's usually caused by infections, food reactions, or motion sickness.
Nausea triggers a signal in your brain through the vagus nerve, which connects your stomach to your brainstem. This signal activates the vomiting center, creating that unpleasant sensation. Common causes include:
| Type | Common Cause | Duration |
|---|---|---|
| Stomach flu (viral gastroenteritis) | Norovirus or rotavirus | 1-3 days |
| Food poisoning | Bacteria (e.g., Salmonella, E. coli) | 6-24 hours |
| Motion sickness | Car, boat, or plane travel | Minutes to hours |
| Morning sickness | Hormonal changes during pregnancy | Weeks to months |
Most nausea passes on its own, but seek medical help if you experience:
According to the Mayo Clinic, dehydration from vomiting can be dangerous, especially in children and elderly people.
Many assume nausea always means food poisoning. However, stress, migraines, and even certain smells can trigger it. For example, anxiety activates the same brain pathways as physical illness, leading to nausea without infection.
If nausea strikes, try these steps:
Last summer, I felt sudden nausea after eating raw oysters. Within hours, I had diarrhea and vomiting. A doctor confirmed food poisoning. Drinking electrolyte solutions helped me recover in 24 hours.