It's probably sauce purple ...
Even people who have no idea about heavy metals are familiar with many heavy metal incidents. I believe our brains are full of all kinds of news and reports of unexpected events, such as children's careless lead poisoning, excessive mercury in cosmetics, and even terrible roommate's heavy metal poisoning leading to arsenic poisoning.
Heavy metal poisoning is almost fatal, which is almost the default concept in our minds. So heavy metals are a scourge? In the attitude of being responsible for our own lives, let's learn more about this monster together. ?
First of all, what are heavy metals? Judging from the name, it is relatively heavy metal. Generally speaking, heavy metals refer to metals with a density greater than 4.5 grams per cubic centimeter. At present, there are about 40 kinds of heavy metals, such as lead, chromium, mercury, zinc and copper. ?
Are heavy metals harmful to human body? ?
There are about fourteen kinds of heavy metals harmful to human body. Let's see what these hazards are and how deadly they are. ?
Heavy metal species?
Harm to the human body?
Leadership?
It is one of the most toxic heavy metal pollution, and it is difficult to eliminate once it enters the human body. Direct damage to human brain cells, especially fetal neural plate, can cause congenital shallow cerebral sulcus and mental retardation; Leading to dementia and brain death in the elderly. ?
Mercury?
It sinks directly into the liver after eating, which is very harmful to the visual nerve of the brain. Natural water containing 0. 1 ml per liter of water is highly toxic. Drinking water containing trace mercury for a long time will cause cumulative poisoning. Mercury and its derivatives are widely used in preservatives, toothpaste, medical devices and beauty creams. Chronic mercury poisoning can lead to multiple sclerosis. ?
Chromium?
Irritant and corrosive to skin, mucosa and digestive tract, leading to skin congestion, erosion, ulcer, nasal perforation and skin cancer. It can accumulate in the liver, kidney and lungs. It will cause numbness in the limbs and mental abnormality. ?
arsenic
Chronic poisoning can cause skin lesions, nervous system, digestive system and cardiovascular system disorders, with cumulative toxicity and destroy the metabolic system of human cells. Will make the skin pigmentation, leading to abnormal keratinization. ?
cadmium (Cd)
It can accumulate in human body and cause acute and chronic poisoning. Acute poisoning can cause vomiting blood, abdominal pain and finally death. Chronic poisoning can damage renal function, destroy bones, and cause bone pain, osteomalacia and paralysis. ?
Fluorine?
Mild dental fluorosis, skeletal fluorosis, severe bone mineral density is excellent, easy to fracture?
Aluminum?
Excessive accumulation will cause mental retardation in children, memory loss in middle-aged people and dementia in the elderly. ?
cobalt
Radiation damage to the skin?
vanadium
It can damage the heart and lungs, leading to abnormal cholesterol metabolism. ?
Antimony?
With arsenic, silver jewelry will turn brick red, which is harmful to the skin.
Selenium?
Too much, people will get sick?
thallium
Can you get polyneuritis?
Manganese?
Does excessive dosage make people hyperthyroidism?
Tin?
Lead and lead are important components in the ancient highly toxic drug' Silver Carp', which solidified into pieces after entering the abdomen, causing death. ?
Zinc?
Can excessive zinc poisoning happen?
Iron?
It can catalyze oxidation in human body, but excessive iron will destroy the basic components of cells, such as fatty acids, protein, nucleic acids and so on. , resulting in the imbalance of other trace elements, especially the demand for calcium and magnesium. ?
Are you scared? But it is important to say three times that not all heavy metal elements are toxic, some are essential elements for human body, and there are 20 kinds of minerals necessary for human body, many of which are also heavy metals. Let's take a look. ?
Trace elements essential for human body in heavy metals?
Effect on human body?
Iron?
Participate in the operation, exchange and tissue respiration of oxygen. ?
Copper?
Interact with iron to form collagen and enhance blood vessel elasticity. ?
Zinc?
It is an essential substance for the metabolism of more than 70 enzymes. ?
Chromium?
Strengthen the effect of insulin on sugar and lipid. ?
cobalt
It is a component of vitamin B 12 involved in hematopoiesis. ?
Manganese?
It is a component of peroxidase and pyrogluconate hydroxylase and participates in sugar metabolism. ?
Nickel?
Lipid urease component promotes iron absorption and stimulates hematopoiesis. ?
Tin?
It is catalysts and oxidants that help maintain the three-dimensional structure of protein and nucleic acids. ?
Silicon?
Maintain the normal tissue and structure of connective tissue and bones. ?
Selenium?
It is a component of glutathione peroxidase.
molybdenum
It is a component of sulfite, xanthine, aldehyde and other oxidases. ?
Iodine?
It is the main component of thyroid gland, and iodine deficiency can cause neck enlargement. ?
vanadium
Control ATPase, phosphate invertase and sodium pump. ?
Fluorine?
Maintain tooth and bone structure, inhibit dilute alcohol enzyme pyrophosphatase. ?
These essential heavy metals must be in a proper amount, and if they exceed a certain amount, they will cause fatal injuries. Therefore, the country has national standards for the heavy metal content of many products, such as the Limit Standard for Heavy Metal Pollutants in Food, the Limit and Determination of 10 Heavy Metal Elements in Dye Products, and the Safety Technical Specification for Textile Products for Infants and Children. The content of each essential heavy metal element has strict regulations. But there is no need to supplement it with health care products in daily life. Usually a balanced diet is enough. ?
So what is the mechanism of heavy metals poisoning human body? ?
After heavy metals enter the human body, they will be associated with