When germs that cause food poisoning get into our systems, they can release toxins. These toxins are poisons the reason for the name "food poisoning" , and can cause diarrhea and vomiting. Usually, doctors use "food poisoning" to describe an illness that comes on quickly after eating contaminated food. People often get diarrhea or start throwing up within a few hours after being infected. The good news is, food poisoning usually goes away quickly too.
Most people recover in a couple of days with no lasting problems. In a few cases, severe food poisoning can mean a visit to the doctor or hospital. When people need medical treatment for food poisoning, it's often because of dehydration. Getting dehydrated is the most common serious complication of food poisoning.
How food poisoning shows up depends on the germ that caused it. Sometimes a person will start to feel sick within an hour or two of eating or drinking contaminated food or liquid. Other times, symptoms may not appear for a number of weeks. In most cases, symptoms will clear up within 1 to 10 days. In rare cases, food poisoning can make someone feel dizzy, have blurry vision, or notice tingling in the arms.
In very rare cases, the weakness that sometimes goes along with food poisoning will cause trouble breathing. When people eat or drink something that's contaminated with germs, they can get sick with food poisoning.
Often, people get food poisoning from animal-based foods — like meat, poultry, eggs, dairy products, and seafood. But unwashed fruits, vegetables, and other raw foods also can be contaminated and make people sick. Even water can cause food poisoning.
Foods and liquids can be contaminated at lots of different points during food preparation, storage, and handling. For example:. People with health conditions like chronic kidney disease or weakened immune systems are more at risk of getting ill from food poisoning than people who are in good health. Salmonella bacteria are the leading cause of food poisoning in the United States. These bacteria usually get into foods when they come into contact with animal feces.
The main causes of salmonella poisoning are eating dairy products, undercooked meat, and fresh produce that hasn't been washed well. Eating undercooked ground beef is the most common reason why people in the United States get E.
These bacteria are mostly found in unpasteurized dairy products, smoked seafood, and processed meats like hot dogs and luncheon meats. 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.
Others may take a few days to make you sick. This list provides the symptoms, when symptoms begin, and common food sources for germs that cause food poisoning. The germs are listed in order of how quickly symptoms begin. If you think you or someone you know got sick from food, please report it to your local health department. Reporting an illness can help public health officials identify a foodborne disease outbreak and keep others from getting sick.
Skip directly to site content Skip directly to page options Skip directly to A-Z link. Food Safety. Section Navigation. Facebook Twitter LinkedIn Syndicate. Food Poisoning Symptoms. Minus Related Pages. On This Page. Symptoms and Sources of Common Food Poisoning Germs Some germs make you sick within a few hours after you swallow them. Staphylococcus aureus Staph Symptoms begin 30 minutes to 8 hours after exposure: Nausea, vomiting, stomach cramps.
Most people also have diarrhea. Common food sources: Foods that are not cooked after handling, such as sliced meats, puddings, pastries, and sandwiches. Vibrio Symptoms begin 2 to 48 hours after exposure: Watery diarrhea, nausea, stomach cramps, vomiting, fever, chills Common food sources: Raw or undercooked shellfish, particularly oysters. Read tips to avoid food poisoning. Page last reviewed: 18 June Next review due: 18 June Food poisoning. Check if you have food poisoning Symptoms of food poisoning include: feeling sick nausea diarrhoea being sick vomiting stomach cramps a high temperature of 38C or above feeling generally unwell — such as feeling tired or having aches and chills The symptoms usually start within a few days of eating the food that caused the infection.
Sometimes they start after a few hours or not for a few weeks. How to treat food poisoning yourself You can usually treat yourself or your child at home.
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