What are the harmful effects of contaminated food on the human body?

Just like if you eat stones, plastics, indigestible things, there must be something wrong with eating them!

1. Biological pollution: Biological pollution of food includes contamination of microorganisms, parasites, insects and viruses. Microbial contamination mainly includes bacteria and bacterial toxins, molds and mycotoxins.

In addition to pathogenic bacteria that can cause food poisoning and zoonotic infectious diseases, bacteria that appear in food include non-pathogenic bacteria that can cause food spoilage and can be used as a sign of food contamination. Parasites and eggs contaminate food indirectly or directly through water or soil, mainly through the feces of sick and sick animals. Insect contamination mainly includes beetles, mites, and moths in food, as well as flies and maggots in animal food and fermented food.

Virus contamination mainly includes hepatitis virus, polio virus and foot-and-mouth disease virus, and other viruses are not easy to multiply on food;

2. Chemical pollution: chemical pollution of food involves a wide range and the situation is more complicated. These include:

1) Pollutants from production, life and environment, such as pesticides, veterinary drugs, toxic metals, polycyclic aromatic hydrocarbon compounds, N-nitroso compounds, heterocyclic amines, dioxins, trichloropropanol, etc.;

2) Harmful substances dissolved into food when food containers, packaging materials, means of transportation, etc. come into contact with food;

3) abuse of food additives;

4) Substances produced in the process of food processing and storage, such as harmful alcohols and aldehydes in wine;

5) Substances added in the process of adulteration and counterfeiting.

3. Physical pollution: mainly from and from a variety of complex non-chemical debris, although some pollutants may not threaten the health of consumers, but seriously affect the sensory properties and nutritional value of food, food quality can not be guaranteed, mainly:

1) Contaminants from food production, storage, transportation and marketing, such as grass seeds mixed in during grain harvesting, debris in liquid food containers, dust and flies in the process of food transportation and marketing, etc.;

2) Adulteration of food, such as sand and gravel mixed into grain, water injected into meat, and a large amount of sugar mixed into milk powder;

3) Radioactive contamination of food mainly comes from the mining, smelting, production, application and accident of radioactive materials.

Legal basisArticle 85 of the Law of the People's Republic of China on the Safety of Food and Goods.

Food inspections are carried out independently by inspectors appointed by the food inspection agency.

The inspector shall inspect the food in accordance with the provisions of relevant laws and regulations, and in accordance with food safety standards and inspection specifications, respect science, abide by professional ethics, ensure that the inspection data and conclusions issued are objective and fair, and shall not issue false inspection reports.

Answer]: Food from production, processing, transportation, lead leasing, sales, Huaitongzhao cooking and other links, may be polluted by various toxic and harmful substances in the environment, resulting in the reduction of food nutritional value and health quality, bringing different degrees of harm to human health. The health effects of food contaminants on humans are generally divided into three different harmful effects.

1) Acute poisoning: After the contaminants enter the human body with food, they cause damage to the body in a short period of time, and clinical symptoms appear, such as diarrhea, vomiting, pain, etc. The main contaminants that cause acute poisoning are bacteria and their toxins, molds and their toxins, and chemical poisons.

2) Chronic poisoning: food is contaminated with harmful chemicals, due to the low content of pollutants, can not lead to acute poisoning, but long-term consumption will accumulate in the body, after a few years, more than ten years or a longer time, cause damage to the body, showing a variety of clinical symptoms of chronic poisoning. Such as chronic benzene poisoning, lead poisoning, cadmium poisoning, etc.

3) Teratogenic and carcinogenic effects: some harmful substances can act on the embryo through pregnant women, causing the differentiation of cells or organ formation during fetal development to be unable to proceed normally, malformations, and even stillbirth. Substances such as pesticides DDT and aflatoxin B1 can induce tumor growth in the body and form cancer.

Summary. Hello, the harm caused by food contamination can be boiled down to: affecting the nutritional value and sensory properties of food; causing acute and subacute hazards to the body, such as food poisoning; causing chronic harm to the body; It has teratogenic, mutagenic and carcinogenic effects on humans.

Hello, the harm caused by food contamination can be summarized as: Affecting the nutritional value and sensory traits of food round wheel products; causing acute and subacute hazards to the body, such as food poisoning; Causes chronic and chronic hazards to the body; It has teratogenic, mutagenic and carcinogenic effects on humans.

Explanation of terms: endogenous foreign body.

Endogenous foreign bodies refer to harmful substances that occur in the body, including viruses, bacteria, fungi, protozoa, antibiotics, toxins, chemicals, heavy metals or other toxic substances. Common endogenous slag foreign bodies include gastrolithiasis, roundworms, etc. In addition, inflammation and bleeding of the respiratory tract may also lead to endogenous foreign bodies such as pseudomembranes, dry crusts, blood clots, purulent secretions, and tumor exfoliated emboli.

Endogenous foreign bodies can be excreted from the body through breath, excretion, blood, or other bodily fluids, and can also accumulate in the body due to disease or other reasons, causing many diseases such as rheumatism, liver disease, kidney disease, digestive system disease, nervous system disease, etc. Sharp sleepiness.

10. What is the food hygiene significance of coliform bacteria in food?

As an indicator bacterium for food contaminated with intestinal pathogenic bacteria.

Hazards to human health:

The harm of air pollutants to the human body is multifaceted, manifested as respiratory system damage, physiological dysfunction, digestive system disorders, nervous system abnormalities, mental decline, carcinogenesis, and disability. People call this smoke of disaster"Murderous smoke"。When the concentration of pollutants in the atmosphere is very high, it can cause acute pollution poisoning, or worsen the symptoms, and even kill thousands of people in a few days.

Harm to plants:

Air pollutants, especially sulfur dioxide and fluoride, are very harmful to plants. When the concentration of pollutants is very high, it will cause acute harm to plants, causing lesions on the surface of plant leaves, or directly causing the leaves to wither and fall off; When the concentration of pollutants is not high, it will cause chronic harm to plants, resulting in a decrease in plant yield and poor quality.

Hazards to the weather and climate:

This makes the air very turbid, blocking out sunlight and reducing the amount of solar radiation reaching the ground. Sulfuric acid rain can destroy large areas of forests and crops, corrode and break paper, textiles, leather products, etc., deteriorate metal anti-rust coatings and reduce protection, and also corrode and pollute buildings.

Extended Materials. Prevention method:

1. Discharge toxic gases such as sewage, waste gas, waste smoke, waste residue and other toxic gases from the factory.

2. Try not to use private cars when going out to reduce environmental pollution caused by automobile exhaust emissions.

3. Do not use disposable tableware to save paper.

4. Plant more flowers and trees, and do not cut down indiscriminately.

Characteristics of pollution:

1. Public nuisance, environmental pollution is not affected by regional, racial, and economic conditions, and all are harmed.

2. Latent, many pollution is not easy to find in time, and once it erupts, the consequences are serious.

3. Long-term, many long-term and continuous effects of pollution, endangering people's health and life, are not easy to eliminate.