Food poisoning is caused by eating contaminated food. Luckily, most cases do not last long or require medical intervention. The main culprits of food poisoning are bacteria, such as salmonella or E. coli. However, certain viruses and parasites can cause symptoms too. Food poisoning symptoms can appear a few hours after eating to as long as a few weeks later, for certain types of bacteria and parasites.
Nausea is often one of the first symptoms of food poisoning. It is also one of the more severe, as the person will often feel continuously sick to their stomach. After consuming something tainted, nausea can set in and manifest as dizziness and an urge to throw up. Though this symptom can begin shortly after eating, it more often begins a few hours later. Drinking clear liquids such as water or tea can help alleviate this sensation. A few hours later, bland foods like crackers or plain bread may help settle the stomach.
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