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Doctor insights on: How Does Food Become Contaminated

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How does food become contaminated?

How does food become contaminated?

Food contamination: Food can be contaminated at any step in preparing it for eating: 1) "pre-market" due to exposure of crops, animals, fish to sewage or toxins; 2) "at production" due to unsanitary storage and preparation facilities or ill food handlers; 3) "post-market" due to inadequate cooking and naive handling & preparation of raw foods; 4) "at storage" after foods have been prepared but before consumption. ...Read more

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Dr. Heidi Fowler
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Nutrition (Definition)

Nutrition is the synergistic combination of nutrients found in food and water that allows the human body to perform all essential ...Read more


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How can food become contaminated?

How can food become contaminated?

Food Poisoning: Food can be contaminated through many sources. Physical handling, spray droplets (sneezing, coughing), chemical exposure, sitting out for long periods, etc. Are some of the ways food may be contaminated. Always be aware of your food preparation if possible. Uncooked meats may contain live organisms that could infect. Kitchen cleanliness with meat juices is important not to get on other foods. ...Read more

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How does food and water become contaminated with hepatitis a?

How does food and water become contaminated with hepatitis a?

Poor sanitation: Hepatitis a is transmitted , due to not washing the hands aftenruse of toilet, unsanitary food handling, bad sewage disposal and contamination to agricultural produce ...Read more

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How long does it take food poisoning to show up if you eat unsanitary food?

How long does it take food poisoning to show up if you eat unsanitary food?

6-72 hours: It depends on the infection but at least 6 hours and generally less than 48 (but not always). ...Read more

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How does a person get mercury poisoning if they don't eat fish?

How does a person get mercury poisoning if they don't eat fish?

Many ways: There are many environmental ways to be exposed to mercury and other heavy metals. Thermometers, switches, and some types of light bulbs. When coal is burned, mercury is released into the air. Mercury in the air eventually gets into water or falls to the land where it can be washed into water. ...Read more

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How much arsenic can a person ingest before become sick?

How much arsenic can a person ingest before become sick?

Depends: Arsenic poisoning or arsenicosis is a condition caused by the ingestion, absorption or inhalation of dangerous levels of arsenic. Arsenic is a natural semi-metallic chemical that is found all over the world in groundwater. Large amounts ingested are fatal but small amounts over time can make you sick but not kill you. ...Read more

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E. coli: How can I tell if food is contaminated?

E. coli: How can I tell if food is contaminated?

You can't tell whether a food is contaminated with E: coli by the way it looks, smells or tastes. Although most types of Escherichia coli (E. coli) bacteria are harmless, certain strains, such as E. coli O157:H7, can cause serious foodborne illness. To protect yourself from E. coli and other foodborne illnesses, follow basic food safety guidelines: Rinse raw produce thoroughly; scrub produce that has a firm surface. , Wash your hands, utensils and kitchen surfaces with hot, soapy water before and after preparing or eating food. , Keep raw foods, especially meats, separate from ready-to-eat foods. , Refrigerate or freeze perishable foods promptly. , Avoid unpasteurized juices, ciders and dairy products. , Don't drink untreated water from lakes or streams. , Cook foods thoroughly. Use a thermometer to verify the temperature. , Beef, pork, lamb and veal steaks, chops, and roasts should be cooked to a minimum internal temperature of 145 F (63 C) and allowed to rest for 3 minutes before serving. , Ground meats other than poultry should be cooked to at least 160 F (71 C). , Poultry should be cooked to 165 F (74 C). , Leftovers and casseroles should be cooked to 165 F (74 C). ...Read more

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How does listeria get into food?

How does listeria get into food?

Soil: Listeria lives in soil and decaying vegetable matter where our food is grown. It can be passed to meats and cheeses from vegetables, and it is able to grow and multiply at refrigerator temperature. Hot cooked foods do not harbor listeria. ...Read more

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How does food poisoning spread?

How does food poisoning spread?

By what you eat: Food poisoning doesn't spread from person to person. Rather, bacteria or virus is eaten which causes a reaction in your body. Everyone who eats the same food has similar reaction i.e. Nausea, vomiting, diarrhea , abdominal pain, etc. ...Read more

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Is it possible to get infected by eating food contaminated by HIV blood?

Is it possible to get infected by eating food contaminated by HIV blood?

Extremely rare: It is extremely rare for this to happen. You cannot get HIV from eating food contaminated by small amounts of HIV infected blood. HIV does not live long outside the body. Exposure of the food to cooking heat, air or the acid in the stomach will kill the virus. There have been rare cases reported of children contracting HIV from their caregivers who are HIV infected. ...Read more

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How long does it take to notice food poisoning symptoms from eating bad chicken?

How long does it take to notice food poisoning symptoms from eating bad chicken?

It varies...: ...anywhere from a few hours to 5 days, depending on the particular bacteria that might contaminate undercooked or spoiled chicken. But there's no point in doing anything before symptoms start. Just contact your doctor if you develop vomiting, diarrhea, abdominal cramps, or fever. Most food poisoning isn't very serious, so it's safe to sit tight and wait for symptoms. ...Read more

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How does food get contaminated by gastroenteritis viruses?

How does food get contaminated by gastroenteritis viruses?

Poor sanitation: Many gastrointestinal viruses are transmitted via the fecal-oral route, so poor sanitation and/or poor food handling techniques can lead to contamination of foods (such as a cook having viruses on his hands after leaving the restroom). Also, the viruses are transmitted on door handles, furniture, keyboards, elevator buttons, phones, stair railings; and by shaking hands, changing diapers, etc... ...Read more

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What happens to blood when mosquitoes drink it? How does it become contaminated with disease?

What happens to blood when mosquitoes drink it? How does it become contaminated with disease?

Mosquito Bites: Are you asking about what happens to a human's blood when a mosquito bites and sucks blood? Germs in the mosquito's saliva can mingle with the human's blood leading to infection. ...Read more

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How can you contract food poisoning?

How can you contract food poisoning?

Eating bad food: Food poisoning can come from eating food contaminated with bacteria usually. The most likely culprits are foods that have set out too long. Be especially careful with foods that contain mayonnaise on a buffet or family picnic that have set out awhile. Always remember to wash your fresh foods before you eat them. This will lessen the chance that you will contract a food borne illness. ...Read more

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If you eat infected food how long does it take for the salmonella to kick in?

If you eat infected food how long does it take for the salmonella to kick in?

Within 24 hours: Most of the time symptoms of food poisoning will occur within 24-48 hours of ingestion. ...Read more

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How long after eating tainted food could I get sick from food poisoning?

How long after eating tainted food could I get sick from food poisoning?

The meal after next: Food can go bad from a number of germs, which have onset of varying times. A rule of thumb I use is the meal after next-of you ate something bad for breakfast you will have diarrhea around dinner-time. ...Read more

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How long can someone live without food or water?

It is often quoted: As three days without water and three weeks without food. But remember, this is quite variable depending on you underlying health and environment. As in some cases it could be much longer or shorter. ...Read more

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How long does it take to develop symptoms from food poisoning?

How long does it take to develop symptoms from food poisoning?

Varies: Staph food poisoning: preformed toxin (in creamy, mayonaise foods), onset 4-8 h after tainted food. Symptoms: nausea, vomiting, fever, diarrhea; lasts 24-48 hours. Scombroid poisoning (fresh tuna, grouper, snapper, etc): tasteless toxin, stable to cooking, histamine release; symptoms within 1/2-3h; flushing, palpitations, cramps, diarrhea; lasts 24-48h. Others: onset up to 5 d after exposure. ...Read more

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How does a person become lactose intolerant?

How does a person become lactose intolerant?

Lactose intolerance: Defeciency of an enzyme that breaks down lactose. Treatment involves avoidance of dairy products or using supplements such as lactaid. ...Read more

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How does food poisoning spread/attack?

How does food poisoning spread/attack?

Just as it sounds: Transmitted by food but then some can then spread from person to person. ...Read more

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How do you not get food poisoning by eating sushi if it is raw fish?

How do you not get food poisoning by eating sushi if it is raw fish?

No sewage!: When you get food poisoning from raw seafood, it's usually from shellfish, such as oysters, that filter water that may be contaminated with sewage. That's not the case with fish used in sush, which swim around in the sea. However, you can sometimes get parasites, such as tapeworms, from sushi. As far as i'm concerned, it's worth the risk. ...Read more

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How does food become contaminated?

Food contamination: Food can be contaminated at any step in preparing it for eating: 1) "pre-market" due to exposure of crops, animals, fish to sewage or toxins; 2) "at production" due to unsanitary storage and preparation facilities or ill food handlers; 3) "post-market" due to inadequate cooking and naive handling & preparation of raw foods; 4) "at storage" after foods have been prepared but before consumption. ...Read more

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How does food and water become contaminated with hepatitis a?

Poor sanitation: Hepatitis a is transmitted , due to not washing the hands aftenruse of toilet, unsanitary food handling, bad sewage disposal and contamination to agricultural produce ...Read more

See 2 more doctor answers
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How can food become contaminated?

Food Poisoning: Food can be contaminated through many sources. Physical handling, spray droplets (sneezing, coughing), chemical exposure, sitting out for long periods, etc. Are some of the ways food may be contaminated. Always be aware of your food preparation if possible. Uncooked meats may contain live organisms that could infect. Kitchen cleanliness with meat juices is important not to get on other foods. ...Read more

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Hi, my sister cooked food for us suddenly i saw the plastic had a bite of a rat and i think it was contaminated please help thanks?

Hi, my sister cooked food for us suddenly i saw the plastic had a bite of a rat and i think it was contaminated please help  thanks?

Unlikely: The plastic obviously surrounded some food but it seems as if the rat did not get to the food. Most rats in this country do not carry disease and if they do, it usually requires a direct bite to your body from the rat. The cooking provides an additional level of protection. So you are most certainly fine and only need to seek help if you get sick after several days. ...Read more

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How does food get contaminated by gastroenteritis viruses?

Poor sanitation: Many gastrointestinal viruses are transmitted via the fecal-oral route, so poor sanitation and/or poor food handling techniques can lead to contamination of foods (such as a cook having viruses on his hands after leaving the restroom). Also, the viruses are transmitted on door handles, furniture, keyboards, elevator buttons, phones, stair railings; and by shaking hands, changing diapers, etc... ...Read more

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Which blood-borne diseases can you get from eating food contaminated with infected blood?

Which blood-borne diseases can you get from eating food contaminated with infected blood?

None: Blood borne infections are rarely (if ever) acquired by oral exposure. Transmission of HIV, viral hepatitis, and other blood born infections usually requires direct exposure to blood through wounds, shared drug injection equipment, or sex. You don't need to worry about blood on food. ...Read more

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Can you contract oral herpes from contaminated food?

Can you contract oral herpes from contaminated food?

Very doubtful: The herpes virus can not stay viable on food for long. It is usually contracted by direct contact with an infected individual who is experiencing an outbreak or by sharing a glass, spoon, or even cigarette with said person. ...Read more

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Can Lasa virus be killed through contaminated cooking food?

Lassa fever dangers: This disease is dangerous -and is transmitted by 'dust' or aerosols. Mice/rats contaminate food supplies and then you have the issue of what to do with the food that's contaminated. The best thing, I believe, would be to throw it all out, since you don't want to create dust or aerosols while cooking. It's infectious after all. Technically boiling temps kill the virus, but is it worth the risk? ...Read more

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After eating a contaminated food how quickly will you have symptoms?

30 minutes to hours: This depends on exactly what is causing the illness. Some types of food poisoning can have onset within 30 minutes and others may take several hours. ...Read more

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I understand that the harmful form of ecoli that killed my mom needs contaminated food to survive. How long does it live without it? Months? Years?

I understand that the harmful form of ecoli that killed my mom needs contaminated food to survive. How long does it live without it? Months? Years?

Short time: E coli bacteria last less than 1-2 days on a surface that's contaminated. As you mentioned they would need a medium to propagate on otherwise it wouldn't be viable on a surface. ...Read more

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Can cooking e coli contaminated food kill the bacteria?

Can cooking e coli contaminated food kill the bacteria?

Yes, proper cooking: Thoroughly cooking foods, and proper food-safety habits, kills e. Coli bacteria. The "bad" e. Coli in food poisoning at first causes intestinal symptoms such as diarrhea. If it goes on to damage the blood and the kidneys, more organs get affected, and skin rashes looking like tiny blood spots or like bruises can appear. This second, serious stage of the illness is called hemolytic uremic syndrome. ...Read more

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Is contaminated food the most likely place to get an e.Coli infection?

Is contaminated food the most likely place to get an e.Coli infection?

E. coli infections: Contaminated food is certainly a major source of e. Coli, but swimming unknowingly in contaminated waters, and lackadaisical hand washing also contribute. Improper home food preparation or kitchen precautions is also a major problem, so there are many ways that the bacteria can gain access the good news is that most of us who have healthy immune systems can avoid serious illness even if infected. ...Read more

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Is it possible to get infected by eating food contaminated by HIV blood?

Extremely rare: It is extremely rare for this to happen. You cannot get HIV from eating food contaminated by small amounts of HIV infected blood. HIV does not live long outside the body. Exposure of the food to cooking heat, air or the acid in the stomach will kill the virus. There have been rare cases reported of children contracting HIV from their caregivers who are HIV infected. ...Read more

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Have episodes of dizziness after eating every time. What could be causing this? Could my food be spoiled or contaminated?

Several concerns: Hyper insulin, gastric distinction. Need to have areal good history and exam and chemical testing and perhaps imaging. ...Read more

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What are the symptoms for food poisoning or ingesting contaminated food? Five nights ago i mixed a batter of over-the-counter pancake mix then realized it was old. It had been open on the shelf uncovered. I fried and ate the food anyway. It didn't tast

What are the symptoms for food poisoning or ingesting contaminated food? Five nights ago i mixed a batter of over-the-counter pancake mix then realized it was old.  It had been open on the shelf uncovered.  I fried and ate the food anyway.  It didn't tast

Your : Your symptoms of cramping and diarrhea are consistent with food poisoning. It is very difficult to tell between viral gastroenteritis (stomach flu) and food poisoning, but with the concerning food intake then your symptoms could certainly be food poisoning. Most food poisoning will resolve on its own, but if you develop vomiting, are unable to tolerate fluids, have fever, pain, or blood in your stool then you need to be seen as an emergency. ...Read more

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How long after eating possibly contaminated food would one suffer the symptoms of food poisoning?

2-6 hours for staph: Food poisoning is caused by eating contaminated food. Infectious organisms, including various bacteria, viruses and parasites, or their toxins are the causes of food poisoning. When you develop symptoms depends on the exact cause of the food poisoning. One of the common causes of food poisoning is due to toxins produced by bacteria staph aureus especially if food is kept at room temperature. ...Read more