There are more than types of food poisoning. Although the symptoms may be similar, the length of time it takes to get better differs, depending on:. Most of the time, food poisoning is an illness of your stomach and intestines.
But it can affect other organs, too. These are the most common causes of food poisoning in the United States along with the foods associated with them:. The time between when you ingest contaminated food and first experience symptoms can be anywhere from under one hour to three weeks. This depends on the cause of the contamination. For instance, symptoms of a bacterial infection linked to undercooked pork yersiniosis , can appear between four to seven days after eating the contaminated food.
But on average, food poisoning symptoms begin within two to six hours after consuming contaminated food. Symptoms of food poisoning vary by the type of contaminate.
Most people experience a combination of the following:. Check out: Is it a stomach bug or food poisoning? Tips for identification ». Interviewer: Food poisoning. How long after you eat it will it take to affect you? We'll talk about that next on The Scope. Announcer: This is "From the Frontlines," with emergency room physician Dr. Troy Madsen on The Scope.
Interviewer: All right. You're at a barbecue or a party or something and you ate a little something and now you're kind of wondering, "Oh, man. Maybe that chip dip was out a little too long. How long is it going to take until you actually know whether or not you did? Troy Madsen is an emergency room physician at University of Utah Health. Food poisoning. How long after you eat something will it take to affect you? Madsen: So food poisoning's going to take about six hours to hit you.
And when I tell you this, I'm speaking from personal experience because I had some really bad potato salad once, that I knew was bad, and I still ate it and six hours later, I was as sick as I've ever been. Madsen: So, typically, you're going to get some nausea, vomiting, maybe you get some diarrhea as well.
Abdominal cramping, you might hurt all over, you might have a headache with it as well, but, typically, it's going to be those stomach, those GI symptoms. Listeria bacteria also can contaminate fruits and vegetables, although that's less common. These bacteria most commonly infect meat, poultry, and unpasteurized milk. Campylobacter also can contaminate water. As with other kinds of bacteria, these usually get into foods through contact with infected animal feces.
Staphylococcus aureus. These bacteria can be found in meats, prepared salads, and foods made with contaminated dairy products. S aureus bacteria can spread through hand contact, sneezing, or coughing.
That means that people who prepare or handle food can spread the infection. Shigella bacteria can infect seafood or raw fruits and vegetables. Most of the time the bacteria are spread when people who prepare or handle food don't wash their hands properly after using the bathroom.
Hepatitis A. People mostly get this virus from eating raw shellfish or foods that were handled by someone who is infected. It can be hard to know the source of an infection because people may not get sick for 15 to 50 days afterward.
These viruses usually contaminate food that's been prepared by an infected handler. Some of these, including Listeria and E. Most cases of food poisoning don't need medical attention, but some do. The most common serious problem from food poisoning is dehydration.
If you're healthy, you're not likely to get dehydrated as long as you drink enough liquids to replace what you've lost through throwing up or diarrhea.
You'll also want to let your mom or dad know if you start having signs of dehydration. These include:. If you've recently been to a foreign country and start having diarrhea or other stomach problems, it's also a good idea to call your doctor.
Food poisoning especially dehydration can be more serious for people with weakened immune systems or health conditions. If you have a health condition like kidney problems or sickle cell disease , call your doctor as soon as you notice signs of food poisoning.
Pregnant women should also let their doctors know if they get food poisoning as some germs can affect the unborn child. A doctor will ask about what you have eaten recently, how long you've been sick, and what kinds of problems you're having. The doctor will also examine you. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services.
Vomiting is definitely not fun. But it has a purpose. And that can be life-threatening. Neurochemicals can travel different pathways to activate receptors that start the vomiting process. A trigger zone in your brain may pick up immune changes, or sense the presence of drugs or toxins. Or the medulla part of your brainstem may gather relevant information from different parts of your body. Or your vagus nerve, which runs from your brainstem to your GI tract, may signal that something is abnormal in your gut.
Sometimes an upset stomach is harmless.
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