Metals and our production and life are closely related to human health, whether in the form of monomers or in the form of chemical compounds have an important impact on the human body, but the mention of heavy metals, everyone's first reaction is what?
Probably ......?
Even for those who have no concept of heavy metals, there are many familiar heavy metal events, and I believe that our brains are filled with a variety of news and first aid reports, such as children accidentally lead poisoning la, cosmetics in the mercury exceeded the standard la, and even the dreaded roommate heavy metal poisoning arsenic poisoning ...?
Heavy metal poisoning is almost equal to fatal injury, is almost the default concept in our minds. So do heavy metals equal a flood? In the spirit of taking responsibility for our own lives, let's come together to learn a little more about this monster...?
First of all, what does heavy metal mean? From the name, it is the heavier metal, right? Generally speaking, heavy metal refers to the density is greater than 4.5 grams per cubic centimeter of the metal, the current known heavy metal is about forty kinds of heavy metal, such as lead, chromium, mercury, zinc, copper, etc.?
Are all heavy metals harmful to the human body?
There are about fourteen types of heavy metals that are harmful to the human body. Let's start by taking stock of what these hazards are and how deadly they really are.?
| Types of heavy metals? | Harmful to humans? |
| Lead? | It is one of the more toxic types of heavy metal pollution, which is difficult to eliminate once it enters the human body. It directly harms human brain cells, especially the neural plate of the fetus, which can cause congenital shallow cerebral sulcus and mental retardation; and cause dementia and brain death in the elderly. |
| Mercury? | It sinks directly into the liver after ingestion, and is extremely destructive to the brain's optic nerve. Natural water contains 0.1 milliliter per liter of water, it will be strongly poisoned. Drinking water containing traces of mercury can cause accumulative poisoning if consumed for a long time. Mercury and its derivatives are widely used in preservatives, toothpaste, medical devices and beauty creams, and chronic mercury poisoning can lead to multiple sclerosis.? |
| Chromium? | It is irritating and corrosive to the skin, mucous membranes, and the digestive tract, resulting in skin congestion, vesicles, ulcers, and nasal perforation, and skin cancer. It can accumulate in the liver, kidneys and lungs. It can cause numbness of the limbs and mental anomalies. |
| Arsenic? | Chronic poisoning can cause skin lesions, neurological, digestive and cardiovascular disorders, with cumulative toxic effects, destroying the metabolic system of human cells. It can cause skin pigmentation and lead to abnormal keratinization.? |
| Cadmium? | Can be accumulated in the human body to cause acute and chronic poisoning, acute poisoning can cause people to vomit blood, abdominal pain, and finally lead to death, chronic poisoning can cause kidney function damage, destruction of bone, resulting in bone pain, bone softening, paralysis. |
| Fluoride? | Mild cases of dental fluorosis, fluoridated bones, heavy cases of bone density is too hard, easy to fracture? |
| Aluminum? | Accumulating too much of it can cause mental retardation in children, memory loss in middle-aged people, and dementia in the elderly.? |
| Cobalt? | Radioactive damage to the skin? |
| Vanadium? | Wounds the heart and lungs and causes abnormal cholesterol metabolism? |
| Antimony? | With arsenic can make silver hand jewelry turn brick red, strong damage to the skin? |
| Selenium? | People get staggers in excess? |
| Thallium? | Can you get polyneuritis? |
| Manganese? | In excess, it can make a person hyperthyroid? |
| Tin? | With lead is an important ingredient in the ancient poisonous drug 'hemlock', which solidifies into a lump after entering the abdomen and kills the person.? |
| Zinc? | Zinc poisoning in excess? |
| Iron? | It has a catalytic effect on oxidation in the body, but too much iron can damage essential cellular components such as fatty acids, proteins, and nucleic acids, leading to an imbalance in other trace minerals, especially calcium and magnesium requirements. |
Isn't it scary, but it's important to say it three times, the heavy metal elements are not all poisonous, some of them are essential elements inside, the human body essential mineral content of 20 kinds of, which have a lot of also belong to the heavy metal. Let's take a look.
| Essential trace elements of heavy metals? | What are the effects on the human body? |
| Iron? | Participates in the functioning of oxygen, its exchange, and the respiration of tissues? |
| Copper? | Interacts with iron to form collagen, which enhances the elasticity of blood vessels.? |
| Zinc? | It is essential for the metabolism of more than 70 enzymes.? |
| Chromium? | Enhances the action of insulin on sugar's and lipids.? |
| Cobalt? | Is a component of vitamin B12 involved in hematopoiesis.? |
| Manganese? | Is a component of peroxides and pyrogluconate hydroxylase, involved in sugar metabolism.? |
| Nickel? | Component of lipoarabinase, which promotes iron absorption and stimulates hematopoiesis.? |
| Tin? | It is a catalytic, oxidizing agent beneficial in maintaining the three-dimensional structure of proteins, nucleic acids, etc.? |
| Silicon? | Maintains the normal organization and structure of connective tissue and bone.? |
| Selenium? | Is a component of glutathione peroxidase? |
| Molybdenum? | Is a component of the oxidizing enzymes sulfite, xanthine, and aldehyde? |
| Iodine? | It is a major component of the thyroid gland, and iodine deficiency can cause neck enlargement.? |
| Vanadium? | Controls ATPase and phosphorus converting enzyme and sodium pump.? |
| Fluorine? | Maintains tooth and bone structure inhibits dilute alcoholase pyrophosphatase etc.? |
These essential heavy metals in the body is to have a suitable amount, more than a certain amount will cause fatal damage, so the country has a national standard for many kinds of heavy metal content of products, such as food in the heavy metal pollutants in the limited standard, drinking water standards for the content of heavy metals, dyes in the product of the 10 kinds of heavy metal elements in the Limitation and Determination of 10 Heavy Metal Elements in Dye Products, and Technical Code of Practice for the Safety of Textile Products for Infants, Young Children and Children. The content of each essential heavy metal element is strictly regulated. However, there is no need to specialize in daily life through the health care products to supplement, the usual meals in the balanced nutrition can be?
So what is the mechanism of heavy metal poisoning the human body?
After entering the human body, heavy metals will be associated with the human body