3 common bacteria in food

Did you know that it is possible to find bacteria in food that cause damage to health? Consuming contaminated products can lead to intoxications that render the digestive system incompetent. Thus, it may need pharmacological aids to restore its normal function. Next, we are going to tell you which are the 3 most common strains.

Keep in mind that good food hygiene practices are capable of avoiding many scares. Only by keeping the cold chain, or properly defrosting consumer products can prevent many pathologies caused by pathogens that put human health at risk.

What damage do bacteria cause in the body?

The usual thing when a pathogenic bacteria is consumed is that it colonizes the digestive tract and alters its normal function. From here on, nausea, vomiting, diarrhea, pain, gas and even fever can occur.

This in terms of symptoms, but it is clear that the intestinal tube will not be able to absorb and digest nutrients properly either, so dietary deficits will be experienced.

Bartonella henselae bacteria are the cause of cat scratch disease.

In the worst case, other vital organs such as the liver can be damaged. Some bacteria are capable of generating hepatitis. However, this pathology is usually caused by viruses that can also be present in food. This is evidenced by a study published in the journal Journal of Applied Microbiology.

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3 common bacteria that can be found in food

We are going to present you 3 strains of bacteria that can be present in food and that will colonize the digestive tract if good food hygiene practices are not ensured.

1. Salmonella

It is a typical bacteria found in meat and eggs. It is present in the intestines of many animals and can be transmitted by contact with their fecal remains.

Usually, it generates intense symptoms that courses with severe vomiting, diarrhea, and abdominal cramps. In the most severe cases, it can lead to dehydration and require medical attention.

It is common to become infected with this bacterium through the consumption of mayonnaise or products made with eggs in summer. When good food hygiene practices are not observed, these pathogens that do well at room temperature can proliferate, according to data from a study published in the journal Food Microbiology.

2. Clostridium

This bacterium is the cause of botulism, a pathology that causes progressive paralysis of the muscles of the human body, and that it can cause death.

It is generally found in canned foods that have not been properly sterilized, such as tomato sauces. Fortunately, it is a microorganism that has been shown not to withstand high temperatures well, so boiling usually kills it.

In any case, it is important to make sure that the packaged foods that we buy have not lost their vacuum and that they do not show any deformation on the outside.

If not, it is best to dispose of them rather than consume them. It is also important to respect the dates of preferential consumption of food, especially those that contain products of animal origin.

3. Campylobacter

It is a bacterium that causes enteritis, a pathology that causes inflammation at the intestinal level. It is common for it to derive strong colic and diarrhea, even sometimes blood can be detected in the stool and episodes of high fever. It all depends on the ingested strain in question and the amount of bacteria consumed.

It should be noted that we are talking about a pathogen that can live in water or in certain foods such as poultry. The consumption of this last raw product is highly dangerous. However, the sterilization of food and complete cooking causes the death of the microorganism, so the danger ceases.

To know more: How to introduce meat in the baby's diet?

Are all common bacteria harmful?

Both yogurt and kefir have lactobacillus, a bacteria beneficial for digestive function.

Although we have given you examples of bacteria that are harmful to human health, it should be noted that not all are harmful to health.

Some can colonize areas of the intestinal tract and generate a benefit for the host at the digestive level. They are even capable of positively affecting immune function. We are going to introduce you to the main bacteria that are good for the body and the foods that contain them in large quantities.


It is a genus of bacteria present above all in dairy foods that have undergone a fermentation process. It is common to find them in yogurts and kefir.

They have the ability to improve digestive function and reduce the incidence of inflammatory bowel diseases. In addition, they help prevent diarrhea associated with the chronic use of antibiotics.


As in the previous case, this type of microorganism is typical of dairy products that have undergone a previous fermentation. However, they can also be included in the diet through supplements.

Its regular intake is capable of improving the management of various food intolerances, as well as avoiding the development of neurodegenerative pathologies in the medium and long term. This is due to the increase in intestinal permeability that they generate.

Common bacteria in food, a double-edged sword

As discussed, you can see that there are two types of bacteria present in food: those that cause damage and those that are capable of inducing an improvement in the function of certain systems that make up the body. It is essential to avoid the consumption of the former and enhance that of the latter.

To achieve this goal, you must maintain hygienic practices when it comes to food handling.. Also, it is important to emphasize the consumption of fermented dairy products, you can even value supplementation with these microorganisms in order to generate a better state of health. If you opt for this option, consult a specialist first.