What is Food Poisoning? Symptoms, Causes, and Treatment

What is Food Poisoning?

Food poisoning is an illness spread through food or beverages. Contamination can be defined as the exposure of food to disease-causing microorganisms. This exposure can occur during the process from production to consumption, including cultivation, processing, storage, or preparation for consumption. The consumption of contaminated food leads to unwanted complications such as infections and irritation in the digestive system. Consuming contaminated food and beverages causes a large number of individuals to suffer from food poisoning every year. The most common symptoms of food poisoning include diarrhea, high fever, vomiting, stomach cramps, and nausea. Some food groups have a higher risk of causing food poisoning. Food poisoning strains healthcare systems and harms socioeconomic development by damaging the national economy, tourism, the healthcare sector, and trade. For this reason, food poisoning has become a public health issue. Therefore, it is very important to be well-informed about safe ways of producing and consuming food.

Food poisoning is a type of illness that develops when consuming food and beverages containing bacteria, parasites, viruses, or toxins produced by these pathogens. It is also known in medical literature as a 'foodborne illness.' Although the majority of poisonings are caused by common types of bacteria such as Staphylococcus, Salmonella, or E. coli, certain harmful chemicals can also lead to poisoning.

Food poisoning is usually acute, meaning it appears quickly and resolves in less than a week. However, for some individuals, food poisoning can last longer and lead to serious complications. Older adults, people with weakened immune systems, those with chronic illnesses, pregnant women, infants, and children are more likely to experience serious complications. The likelihood of a person becoming ill after consuming contaminated food depends on factors such as the type of microorganism causing the contamination, the microbial load exposed to, the person's age, and their general health status.

According to World Health Organization data, approximately 600 million people—or 1 in 10 people—fall ill every year after consuming contaminated food, and 420,000 people die because they do not consume safe food. It has been determined that children aged 5 and under carry 40% of the foodborne disease burden, with 125,000 deaths occurring annually. Significant financial and medical expenses arise due to the consumption of unsafe food, especially in low- and middle-income countries.

What Are the Symptoms of Food Poisoning?

Symptoms of food poisoning can vary depending on the type of pathogen exposed. These symptoms may manifest as mild complications or lead to more serious health problems. The first symptoms of food poisoning can appear within a few hours or a few days. The most common symptoms of food poisoning are as follows:

Nausea and vomiting,

Diarrhea, stool containing blood and mucus,

Stomach pain, cramps, bloating, and increased gas,

High fever above 38°C and chills,

Fatigue and muscle aches,

Weight loss and loss of appetite,

Sunken eyes and cheeks,

Headache.

Rarely, food poisoning affects the nervous system and can cause more serious symptoms to develop. These symptoms may include:

Changes in vision, blurred or double vision,

Drooping eyelids and difficulty moving the eyes,

Severe headache,

Loss of function in limbs,

Swallowing difficulties,

Confusion,

Loss of balance and seizures,

Stiff neck,

Tingling, numbness, and itching of the skin,

Changes in voice tone and slurred speech.

Some infections caused by food can lead to other life-threatening health problems:

Meningitis,

Kidney damage,

Hemolytic uremic syndrome, which can cause kidney failure,

Arthritis,

Breathing difficulties,

Guillain-Barre syndrome,

Sepsis (a condition where the immune system causes damage to body tissues due to an overreaction to an illness),

Miscarriage, stillbirth, premature birth, or neonatal infection during pregnancy,

Brain and nerve damage.

How Does Food Poisoning Occur?

People who experience food poisoning mostly contract it because they do not store or prepare food and beverages safely. In some cases, microorganism contamination can occur during the production and processing of food. Lack of hygiene leads to the development of microbial infections that cause poisoning. The causes of food poisoning can be listed in more detail as follows:

Formation of substances such as acrylamide, ethyl carbamate, furan, 4-methylimidazole, 3-monochloropropane-1,2-diol, and glycidyl esters during food supply and production,

Spoilage due to fruits and vegetables not being stored at appropriate temperatures,

Consumption of unpasteurized milk and fruit juice,

Consumption of raw meat and chicken that has not been cooked uniformly,

Cooking frozen foods like fish, meat, and chicken without fully thawing them,

Leaving cooked food at room temperature or reheating it at high temperatures,

Placing freshly cooked food in the refrigerator while it is still hot,

Contact between raw and cooked foods, known as cross-contamination,

Failure to thoroughly clean surfaces, knives, and similar equipment that come into contact with raw food,

Failure to maintain hand hygiene during food consumption and preparation,

Lack of cleanliness in the environment where food is prepared,

Contact of food with rodents and pests that may carry pathogens,

Washing food with contaminated water,

Consumption of cracked or fecal-contaminated eggs,

Obtaining drinking water from unreliable sources,

Refreezing frozen foods after they have been thawed,

Contact of food with wounds and cuts on hands while preparing meals,

The person preparing the food being ill,

Consumption of food and beverages past their expiration date,

Storing food in high-humidity environments or at temperatures conducive to bacterial growth (5-65°C).

How is Food Poisoning Diagnosed?

A diagnosis of food poisoning is made based on symptoms. Severe fluid loss in the patient's body, in particular, can be a sign of food poisoning. At this stage, doctors may ask various questions to understand the cause of the poisoning. They may request various tests on stool samples. However, these tests may not always reveal the cause of the poisoning. In more serious cases, a sigmoidoscopy may be performed. In this diagnostic method, a thin tube with a light and camera at the tip is used. It is inserted into the anus and slowly advanced into the rectum and sigmoid colon. In this way, the factor causing bleeding or infection is attempted to be diagnosed. Blood tests may also be used to diagnose the presence of certain parasites and bacteria.

How is Food Poisoning Treated?

Most patients recover within a few days without the need for treatment. Food poisoning treatment involves procedures to alleviate symptoms and replace fluids lost by the body. Fluids and electrolytes maintain the fluid balance in the body. Electrolytes include minerals such as sodium, potassium, and calcium. These minerals have the property of preventing dehydration in the body. To treat severe dehydration after vomiting and diarrhea, these fluids and electrolytes may be administered directly into the bloodstream.

If it is diagnosed that the illness is caused by bacteria, various antibiotics may be prescribed, and if it is diagnosed as being caused by parasites, antiparasitic drugs may be prescribed. Additionally, doctors may recommend the use of probiotics to patients suffering from food poisoning. Probiotics contribute to the recovery process by increasing the number of healthy bacteria in the digestive system. To prevent food poisoning, more attention must be paid to safe food production, consumption, and food hygiene.

Frequently Asked Questions

Food poisoning usually begins 2-6 hours after consuming contaminated food. However, in some cases, this period can take up to a few days. Food poisoning usually resolves on its own within a few days without requiring treatment. However, in patients in the pregnant, elderly, chronically ill, infant, and child groups, the recovery process may take longer than a few days. This situation varies depending on the microbe causing the poisoning and the patient's body resistance. Experiencing food poisoning during breastfeeding is generally not a problem. In such cases, the mother can continue to breastfeed the baby. However, as a precaution, it is recommended to pause breastfeeding until a doctor's opinion is obtained. Food poisoning usually manifests itself through symptoms. However, in some cases, these symptoms can be confused with stomach flu. Being aware that a suspicious food was consumed or that a person who ate together shows similar symptoms can help a person understand that they have food poisoning. Yes, simple food poisoning can pass on its own. During this process, it is very important not to dehydrate the body and to eat safely. Consumption of foods that could potentially cause poisoning should be avoided during the recovery process. Food poisoning usually resolves on its own without requiring treatment. However, a doctor's opinion must be sought when severe symptoms such as bloody diarrhea, diarrhea lasting longer than three days, high fever, vomiting so frequently that fluids cannot be consumed, inability to urinate, dizziness when standing up, and dryness of the mouth and throat are observed. Especially pregnant women, chronically ill individuals, and those in advanced and young age groups are advised to seek medical check-ups as soon as symptoms appear. At this stage, doctors try to understand the symptoms and the cause of the symptoms by asking various questions. Then, if they deem it necessary, they may resort to blood tests or more advanced diagnostic methods. When the poisoning situation is confirmed, they may resort to various medical methods to ensure fluid replacement and prevent infection. They may recommend a few days of rest and plenty of fluid consumption. Symptoms of chicken poisoning usually appear a few hours after food consumption. However, this period varies from person to person. If severe fluid loss is present, intravenous fluid intervention may be performed to prevent fluid loss. Additionally, various medications may be administered under medical supervision to control infection and nausea. Symptoms of fish poisoning appear similarly to other food poisonings. Initial symptoms include nausea and cramps, fever, vomiting, and fatigue. Yes, in cases of food poisoning, an IV drip may be administered to ensure fluid and mineral replacement.

If you are experiencing symptoms of food poisoning, it is vital to consult a healthcare professional without delay. At Hisar Hospital Intercontinental, your diagnosis and treatment processes are safely planned with our experienced Internal Medicine physicians. You can contact us for detailed information and appointments.