The effects of various trace elements on human body are shown in the table below:

What elements does the human body need?

Sun Zongyan's arrangement in Liaocheng was completed on September, 202011.It was last revised on June, 20021.3.

There are 37 kinds of essential elements for human body, arranged according to the periodic table of elements. The first one is "hydrogen" and the last one is "iodine". If you add "Lanthanides" 15, which are not necessary but harmless in small amount, the human body needs 52 elements.

(Red bold with two @ @ fonts is an important element; Blue italics with an @ as a required element; It is not necessary for black song style not to be bold; Bold bold with exclamation point! Is harmful, the more exclamation marks! ! ! The greater the harm. )

(The first number is the element serial number, followed by the element name, followed by the chemical symbol of the element in parentheses)

(There are always 35 kinds of elements that are necessary for human body, and you will get sick if you lack them or have too many.)

1. Hydrogen (H)@@ The most basic element of human body, accounting for about 10% of the whole body weight, is hydrogen, and water contains hydrogen. If you drink water regularly, your body will not be short of hydrogen. You don't need to replenish it deliberately, just drink water.

2. Helium (He), the lightest inert gas, is non-toxic and odorless, and has no effect on human body.

3. Lithium (Li)@ Lithium is an essential element for human body, which can improve human hematopoiesis and immune function. Each person needs 0. 1 mg, which can affect people's mood. If they are happy, they will be depressed if they are not. Lack of sexual function, shortened life expectancy, and even suicide or crime. Eggs, milk, fish, potatoes and vegetables all contain lithium, and traditional Chinese medicines such as lily and albizzia bark contain more lithium.

4. Be! ! Beryllium is not an essential element for human body, but it is toxic, but it can be excreted when ingested occasionally, and it does not accumulate in the body.

5. Boron (B)@ Boron is an essential element for human body. Organic boron contained in plants is beneficial to human body. Boron can increase bone density, accelerate bone healing, enhance muscle function and improve brain reaction ability. Lack of boron will lead to hypertension and arthritis, and it requires1~ 2mg per day, but inorganic boron is harmful to human body. Foods containing more boron are soybeans, raisins, almonds, peanuts, pine nuts, hazelnuts, red dates, papaya and honey.

6. Carbon (C)@@ is the most basic element of the human body, accounting for about 18% of the whole body weight. It is an important component of food. As long as you eat food, your body will not be short of carbon. If you are short of carbon, you will be hungry and want to eat. If you have rice in your stomach, you will not be short of carbon.

7. Nitrogen (N)@@ is the most basic element in protein, accounting for about 3% of the whole body weight. People need 50 grams of protein every day. If people are short of nitrogen (no matter what protein is, its nitrogen content is 6.25%), they will feel greedy and want to eat meat.

8. Oxygen (O)@@ is the most basic element of the human body, accounting for about 65% of the whole body weight. It is found in water and absorbed by breathing. Human hypoxia is often caused by environmental reasons, such as poor ventilation, high altitude, too humidity, etc., and then there is something wrong with the lungs and trachea. Human hypoxia is mainly due to poor breathing and has nothing to do with food.

9. Fluorine (F)@ Fluorine is an essential element for human bones and teeth. Without it, you will get dental caries, and you need 0. 1 mg per day. Too much is not good, and your teeth will be yellow. Foods rich in fluorine are fish, shrimp, kelp, laver, jellyfish, tea and mineral water.

10. Neon (ne) neon is an inert gas, which is not found in human body, and it has no effect on human body if inhaled occasionally.

1 1. sodium (Na)@ sodium is an essential element for human metabolism, accounting for about 0. 15% of body weight. It is contained in salt. The human body needs 6 grams of salt every day, but it is better not to exceed 10. The best salt is bamboo salt, which is rich in trace elements, followed by.

12. Magnesium (Mg)@ magnesium is an essential element for human body, and each person needs 350 mg. Magnesium deficiency will reduce blood calcium and cramp. In severe cases, there will be osteoporosis, memory decline, insanity and muscle weakness. Plants contain magnesium, and the two foods containing the most magnesium are laver and sea cucumber (more than 1000). Pine nuts, hazelnuts and watermelon seeds also contain more magnesium (more than 400, which means the number of milligrams per 100 g, the same below), and bananas, beans, mushrooms and sesame seeds also contain a lot (about 300).

13. Aluminum (al)! Aluminum is an element harmful to human body, and the main cause of Alzheimer's disease is fried dough sticks, vermicelli, vermicelli and puffed food.

14. Silicon (Si)@ Silicon is an essential element for human body, which will gradually decrease with age. Lack of silicon is easy to get cardiovascular disease, organ atrophy and skeletal deformity. Everyone needs 20 mg, but they must eat it, but they can't inhale it. Inhalation with silicon-containing dust makes people get silicosis. Silicon widely exists in the epidermis of plant seeds. Rice and white flour do not contain silicon, but bran and rice bran contain silicon. Only seeds that are eaten with skins contain silicon, such as corn, beans and other miscellaneous grains, peeled sweet potatoes, potatoes, lotus roots, etc., and metasilicic acid in natural mineral water also contains silicon.

15. Phosphorus (P)@@ Phosphorus is the most important element in human metabolism, an important component of bones, teeth and brain, and also an important genetic material. It participates in all life activities. Phosphorus should be in a certain proportion to calcium, and the required amount is 1 g/day for children and youth, 0.7g/day for adults, kelp, laver and beans.

16. Sulfur (S)@@ Sulfur is the most important element in human metabolism, which is found in all protein. The content of human hair, skin and nails is the highest, and garlic, green onions, onions, cabbages, radishes, nuts, beans and cereals have the most sulfur. Sulfur can resist cancer, resist blood coagulation, eliminate free radicals, resist aging and remove lead. Can prevent diabetes and hepatitis.

17. Chlorine (Cl)@@ Chlorine is an important element in human activities, accounting for about 0. 15% of body weight. Chlorine can keep water in the body, maintain acid-base balance, and is the main component of digestive juice in the stomach. Chlorine can introduce carbon dioxide into the blood, which is contained in salt. If people don't eat salt, they will have muscle weakness, extreme fatigue and premature graying. Eating salt can replenish chlorine. But chlorine is toxic and can't be inhaled.

18. Argon (ar) is an inert gas slightly heavier than air, which is not found in human body, and air accounts for 0.93%. Inhaling a small amount has no effect on human body.

19. Potassium (K)@@ Potassium is an important element necessary for human activities. There is potassium in human cells and sodium outside; Chlorine, potassium and sodium are the three most important elements to maintain the acid-base balance of human body. There is a lot of potassium in vegetables and fruits. Lack of potassium can cause dizziness, arrhythmia, vomiting, diarrhea, muscle weakness, spasm and heart failure. Specifically, bananas contain the most potassium in food, and raisins, potatoes, meat, milk, cheese, wax gourd and oranges contain more potassium. However, drinking and eating sugar will accelerate the discharge of potassium in the body, resulting in potassium deficiency, so try to eat less such acidic foods.

20. Calcium (Ca)@@ Calcium is an important element that constitutes bones and teeth. It is the most abundant metal in human body, with 99% in bones and teeth and 1% in blood. Calcium participates in the functions of more than ten systems in the body, such as immunity, nerve, endocrine, digestion, circulation, exercise and reproduction, and participates in the whole process of life evolution and life movement. Calcium deficiency osteoporosis, easy to fracture, calcium deficiency leg cramps in the blood, normal human body needs 800 mg per day. Eating meat and drinking bone soup can't supplement calcium, because most of the calcium in mammals is water-insoluble calcium phosphate in bones. The top four calcium supplements in food are sesame sauce, shrimp skin, cheese and kelp. In addition, black beans, eggs and milk also contain more calcium. Meat not only contains little calcium, but eating more meat will also lead to osteoporosis because the body accelerates the excretion of calcium in order to maintain the acid-base balance in the body.

2 1. Scandium (Sc) Scandium is a rare earth element, not an essential element for human body, which is harmless in a small amount and toxic in a large amount.

22. Titanium (Ti)@ Ti is an essential element for human body, but only organic titanium dissolved in water can be absorbed by human body. Titanium can strengthen physique and resist many diseases. It's a biophilic metal. Titanium can balance blood pressure and regulate blood lipid and blood sugar. Anti-aging, whitening effect, and anti-cancer. Can improve muscle motor function. General foods contain less titanium, and only Lycium barbarum and Astragalus membranaceus produced in Gansu, Ningxia and Qinghai, and Glycyrrhiza uralensis produced in Inner Mongolia, are rich in organic titanium.

23. Vanadium (V)@ Trivalent Vanadium is an essential element for human body, which needs Vanadium 15 μ g/day, but only trivalent organic vanadium dissolved in water can be absorbed by human body. Organic vanadium has many functions such as promoting the growth of bones and teeth, promoting hematopoiesis, lowering blood sugar, lowering blood lipid, balancing blood pressure and improving human immunity. However, inorganic vanadium is toxic, such as vanadium trioxide (V2O3), vanadium pentoxide (V2O5), vanadium trichloride (VCl3) and ammonium metavanadate (NH4VO3). The higher the price (not the price, but the valence price), the greater the toxicity! ! . Foods containing organic vanadium are: cereals, beans, meat, chickens, ducks, fish, shellfish (high content in shells), mushrooms, celery, cucumbers, kelp and so on.

24. Chromium (Cr)@@ Trivalent chromium is an essential element for human body. There are 6 mg in normal young people, but with the increase of age, the trivalent chromium in the body is less and less, and it is less than 1 mg after 50 years old. Trivalent chromium is a longevity factor, which participates in human glucose metabolism, can prevent arteriosclerosis and hypertension, and can resist cancer. Lack of trivalent chromium leads to cardiovascular disease and diabetes, and the adult needs 75 micrograms per day. At present, the lack of trivalent chromium is the main cause of hypertension and diabetes. But hexavalent chromium is extremely toxic! ! . Foods containing trivalent chromium are: brown sugar, animal liver, apple peel, banana peel (you don't have to eat it, you can soak it in water or boil it), licorice produced in Inner Mongolia, whole wheat flour, potatoes with skin, sweet potatoes with skin, corn, red dates, nuts and so on.

25. Manganese (Mn)@ Mn is an essential element for human body, which can promote bone development, participate in the metabolism of protein, fat and sugar in human body, improve the utilization rate of protein, maintain the normal function of brain, and has the functions of anti-aging, anti-oxidation, cancer prevention, anti-cancer and anti-anemia. Manganese deficiency can lead to Alzheimer's disease. It makes people slow down, memory declines, and movement is uncoordinated. However, the absorption rate of manganese is only 10 to 15%, and the requirement of normal people is 2.5 to 5 mg/day. The foods rich in manganese are walnut, pepper, pepper, star anise, malt, rice bran, sunflower seeds, potatoes, mushrooms and animal liver.

26. Iron (Fe)@@ Iron is an essential element in human blood. The reason why blood and muscles are red is the color of organic iron, and ruddy complexion is also a sign of no iron deficiency. Iron can make blood and muscles carry oxygen and participate in the whole process of human metabolism. Iron participates in hematopoietic function, and iron deficiency will lead to anemia. But the most abundant iron compound in nature is trivalent iron (Fe2O3, that is, rust) that the human body can't absorb. The human body can only absorb bivalent iron, which depends on eating animals and plants to supplement iron, but excessive iron will lead to cirrhosis or cancer! ! It's easy to overdo it by taking iron preparations, and it's generally not excessive to eat iron-containing foods, because the human body can selectively absorb them. The best foods for iron supplementation are pig blood, chicken blood and duck blood. Or the heart, liver and kidney of animals. Red dates and black fungus are the best blood-enriching plants, followed by sesame paste, brown sugar, mushrooms, kelp and walnut kernels. Spinach, shepherd's purse, bitter vegetables, amaranth, rape and celery are also supplemented with iron, and peaches, apricots, plums, cherries and raisins can also be supplemented with iron.

27. Cobalt (Mo)@ Cobalt is an essential element for human body, but it is only found in animals. Vitamin B 12 contains cobalt. If the human body lacks cobalt, it will suffer from megacell anemia, or loss of appetite, muscle weakness, or abnormal bone development, such as hyperosteogeny or disc herniation or dislocation. The total cobalt content in adults is 1.5 mg, in bones 14%, 0.2 1mg, in muscles 43%, 0.65mg, and in other soft tissues 43%, 0.65mg. When organic cobalt enters the human body, it will be adsorbed on albumin, and it will go to the whole body with the blood. Foods rich in cobalt are: animal liver and kidney, especially sheep liver, sheep kidney, deer liver and deer kidney. Secondly, crab meat, oysters and mussels also contain more cobalt. Only red dates, purple grapes and persimmons are a little bit in fruits, and other fruits and vegetables rarely contain cobalt.

28. Nickel (Ni)@ Nickel is an important element necessary for human body, which almost participates in the whole process of life activities. The consequences of nickel deficiency in human body are very serious, ranging from diabetes and fatty liver to anemia, cirrhosis, uremia, renal failure and abnormal phospholipid metabolism in severe cases. What human body needs is organic nickel. There are more nickel in plants than in animal foods. In plant foods, there are loofah, mushrooms, eggplant, onions and so on. However, the content of nickel in meat and seafood of animal foods is slightly higher, such as chicken, mutton, beef, crucian carp, yellow croaker, shrimp and shellfish. But too many people will get cancer if inorganic nickel enters the human body! ! .

29. Copper (Cu)@ copper is an essential element for human body. Lack of copper increases the brittleness of bones and blood vessels, which is easy to fracture and cerebral hemorrhage, and also causes mental retardation, brain atrophy, osteoporosis, baldness and vitiligo. The foods with the richest copper content are: animal liver (2500? G/ 100g), sesame (1680), spinach (1350), soybean (1300), taro (1290), black bean (/kloc-. But too much inorganic copper in the body will be poisoned! ! .

30. Zinc (Zn)@@ Zinc is the most essential element for human body. It participates in the whole process of human metabolism, and the repair of human tissues can't be completed without zinc. It is called "flower of life" and is the source of human power. When human body is rich in zinc, it is lively and active, while when it is short of zinc, it is lazy and easy to sit. Zinc deficiency in young people leads to decreased sexual desire, oral ulcers, blurred vision, rough skin and even anemia, while zinc deficiency in middle-aged and elderly people leads to dull taste, loss of appetite, decreased resistance, and susceptibility to various diseases and even cancer. However, what the human body needs is water-soluble organic zinc. The zinc content in food is: liver, kidney and whip of animals, oysters, sea cucumbers and shrimp skins in seafood. Generally speaking, animal foods are rich in zinc and have high absorption rate. Plant food contains relatively little zinc and its absorption rate is relatively low. Plants contain zinc: Chinese cabbage, soybean, white radish, rice (rough), wheat, whole wheat flour, millet, corn flour, corn, sorghum flour, lentils, potatoes, carrots, purple radish, radish tassels, pumpkins, etc. Rice and white flour do not contain zinc. All kinds of inorganic zinc are harmful to human body! ! .

3 1. Gallium (Ga)@ Organic gallium has anti-cancer and bone strengthening effects, and can prevent and treat Kaschin-Beck disease. Wild Ganoderma lucidum contains gallium, which will cause poisoning in large quantities, and severe intake will lead to renal failure! ! .

32. Germanium (Ge) is a magical longevity element. Germanium can resist cancer, balance blood pressure, resist aging, prevent arteriosclerosis, treat chronic hepatitis, prevent leukopenia, and treat osteoporosis and rheumatoid arthritis. The wild ganoderma lucidum produced in Tibet and Qinghai (especially in Kunlun Mountain) has the highest germanium content, followed by the wild ganoderma lucidum produced in Yunnan-Guichuan (referring to western Sichuan, not eastern Sichuan). Mushrooms also contain a small amount of germanium, which is a resurrection element, but the artificially cultured ganoderma lucidum contains little germanium. It is necessary to pay special attention to the fact that taking too much artificially extracted germanium preparation will cause renal failure! ! ! .

33. Arsenic (As) Arsenic is not an essential element for human body, but the main component of arsenic (As2O3). However, arsenic in the natural environment will inevitably enter the human body with food and water. If the balance of payments is balanced, it will not have adverse effects. A small amount of arsenic can also promote protein metabolism, enhance human immunity and prevent skin aging, but excessive arsenic will cause people to get skin cancer or die of poisoning! ! ! (For example: Wu Dalang in the Water Margin).

34. Selenium (Se)@@ Se is an essential element for human body, and it is known as the "king of anti-cancer". The daily requirement of "heart protector" adults is 100 microgram, and 72% of the land in China is selenium-deficient, including three major grain producing areas in Northeast China, Shandong, Shanxi, Henan, Hebei and Jiangsu, which makes 95% of China people lack selenium. But people who consume more than 400 micrograms a day may be poisoned! ! . Appropriate amount of selenium can improve human immunity, resist oxidation, delay aging, repair cells, improve oxygen carrying capacity of red blood cells, prevent and treat cardiovascular diseases, stomach diseases, diabetes, thyroid diseases and skin diseases, detoxify, protect eyes and prevent cancer. Selenium is insoluble in hydrochloric acid, which is not absorbed by human body after eating selenium powder. Only selenium in plants can be absorbed by human body. Selenium-enriched foods (definitely related to the place of origin) include: sea cucumber, sesame, garlic, mushrooms, shellfish, squid, sea crab, scallop, hairtail, yellow croaker, lobster, pig's heart and kidney, shrimp skin and dried shrimps.

35. Bromine (Br)@@ Bromine is a very important essential element for human body, which participates in all life activities and can help human body to resist many diseases; In the past, people thought that bromine was irrelevant to the human body. It took 30 years for Dr. Billy Hudson of Vanderbilt University in 2009 to realize that bromine was so important. All seafood contains bromine, such as kelp, laver, hairtail, yellow croaker, shrimp skin, prawn, squid and sea crab, but terrestrial plants contain less bromine. But inorganic bromine invades the human body, and it will be poisoned in large quantities! ! .

36. Krypton (Kr) Krypton is an inert gas, which is more than twice as heavy as air. Generally, it has no effect on human body, but the isotope is radioactive.

37. Rubidium (Rb)@ Rubidium is an essential element for human body. Rubidium will gradually decrease with age in animals, but increase with age in plants. Rubidium can protect the patency of cardiovascular and cerebrovascular diseases, and can treat diseases of nervous system, cardiovascular system, urinary system and senile cataract. Rubidium also has anti-cancer and anticancer effects. Old people suffer from Alzheimer's disease due to lack of rubidium, and women will have habitual abortion due to lack of rubidium. Foods containing rubidium are: shrimp skin, small marine fish, small marine crabs, small squid, shrimp, suckling pigs, sheep fetuses and other young animals; Scutellaria barbata, Hedyotis diffusa and Placenta Hominis (human placenta) contain more rubidium.

38. Strontium (Sr)@ Strontium is an essential element for human body. 99% of strontium is in bones and teeth, and 1% is in blood. Strontium deficiency will cause metabolic disorder, and at the same time, it will cause extreme fatigue, sweating, skeletal retardation, osteoporosis, high blood pressure and even cancer. Animal foods generally do not contain strontium, only sea cucumber, shrimp skin, eggs and milk contain strontium, but plant foods generally contain strontium. Foods rich in strontium include: sea cucumber, hawthorn, red dates, black sesame, laver, soybeans, lettuce, wheat (referring to whole wheat instead of flour) and millet. In addition, mineral water also contains strontium (this is the most important index of mineral water).

39. yttrium (y)! ! Yttrium is a rare earth element, which is toxic. It is not needed by the human body and generally does not invade the human body.

40. Zirconium (Zr) is not an essential element for human body, and it has little effect on human body. But too much is also harmful.

4 1. Niobium (Nb)@ is an essential element for human body. Niobium is a biophilic metal, and it is easy to get sick if it is lacking in the body. But only organic niobium dissolved in water can be absorbed. Niobium can strengthen physique and resist many diseases. Niobium can balance blood pressure and regulate blood lipid and blood sugar. Anti-aging and anti-cancer. General foods contain less niobium, and only Lycium barbarum and Astragalus membranaceus produced in Gansu and Ningxia and Ganoderma lucidum produced in Panzhihua, Sichuan have more organic niobium. But excessive intake of inorganic niobium is also harmful! ! .

42. Molybdenum (Mo) is an essential element for human body. Molybdenum can prevent cancer, balance blood pressure, prevent dental caries and kidney calculi, resist aging, prevent arteriosclerosis and Keshan disease, treat chronic hepatitis, prevent leukopenia, and treat osteoporosis and rheumatoid arthritis. Lack of myopia, myocardial infarction, iron deficiency anemia, growth retardation, mental retardation, Kaschin-Beck disease, esophageal cancer. Foods rich in molybdenum are: animal viscera, meat, whole grains, wheat germ, eggs, leafy vegetables and yeast. Specifically, foods with high molybdenum content include: soybeans, lentils, radish sprouts, brown rice, beef, mushrooms, grapes and vegetables. But inorganic molybdenum will be poisoned when it enters the human body! ! .

43. Technetium (Tc) Technetium is artificial elements, which is not an essential element for human body. It is nontoxic in a small amount and toxic in a large amount.

44. Ruthenium (Ru) is a platinum group element. Ruthenium is not an essential element for human body, and its crust content is very small, and its oxides are all toxic.

45. Rhodium (Rh) is a platinum group element, and ruthenium is not an essential element for human body. The crust content is very small, and a small amount is harmless to human body.

46. Palladium (Pd) is a platinum group element, and ruthenium is not an essential element for human body. The crust content is very small, and a small amount is harmless to human body.

47. Silver (Ag)@@ is an element that is very beneficial to the human body. Drinking water from a silver cup is beneficial to the human body and has a strong bactericidal function. General antibiotics can kill 6 kinds of bacteria, up to more than 20 kinds, and a very small amount of silver ions can kill 650 kinds of bacteria. Food soups in silver cups or bowls can be stored for a long time. Silver can promote wound healing. Dai people put a silver bowl in a water tank, and the water in the tank can be drunk raw without boiling. Dai women wear a silver belt, and there is no waist of a bucket, all of which are water snake waist. Silver can prevent the growth of bacteria, soothe the five internal organs, calm the mind, stop palpitations and eliminate evil spirits. All silver and silver compounds are non-toxic to human body. Generally, food contains less silver, so using silver tableware or wearing silver jewelry can make people healthy.

48. cadmium (Cd) ! ! Elements that are harmful to human body will make people lifeless, and the less in the human body, the better. Some rice cadmium exceeds the standard.

49. Indium (In) Indium is harmless to human body. According to mouse experiments, as long as it does not exceed 1%, it will not cause disease.

50. Tin (Sn)@ is an essential element for human body, which can enhance physical fitness and resist many diseases. Tin plays an important role in various physiological activities and maintaining human health. Tin can resist tumor and inhibit the formation of cancer cells. Tin can promote the synthesis of protein and nucleic acid, which is beneficial to the growth and development of the body; It can promote tissue growth and wound healing, and participate in energy metabolism. Lack of tin in human body will lead to abnormal metabolism of protein and nucleic acid, which will hinder growth and development, especially in children, and even lead to dwarfism in severe cases. Foods rich in tin are chicken breast, beef, lamb chops, rye, lobster, corn, wheat flour, black peas, broad beans, mung beans, sesame seeds, sunflower seeds, mushrooms, beets, cabbage, coffee, honey, peanuts, milk, bananas, hawthorn, garlic and so on.

5 1. Sb! ! ! Antimony is a harmful element to human body. When antimony invades human body, people will suffer from many diseases.

52. Tellurium (Te) Tellurium is not an essential element for human body. It doesn't matter if it is lacking. If the compound exceeds 1 mg, it will be poisoned.

53. Iodine (I) I)@@ Iodine is an essential element for human body. If it is lacking, it will cause coarse neck disease, and pregnant women with iodine deficiency will have brain retardation. Iodine is an important component of human thyroid hormone. However, iodine deficiency or iodine excess will do harm to human body. The function of iodine is to promote the decomposition of substances in the body and generate heat and energy. In the growth and development, for children, it can promote the growth of bones, muscles and sexual function. The development and growth of nervous system must have iodine to participate in the secretion of thyroid hormone.

Foods rich in iodine are seafood, such as kelp, seaweed, shellfish and marine fish, which have the highest iodine content; Followed by eggs, milk and meat; However, grain, vegetables and fruits have the lowest iodine content. Normal people contain about 30 mg (20 ~ 50 mg) of iodine; Too much and too little get sick.

(Iodine is the last element necessary for human body, arranged according to the serial number of elements)

54. Xenon (Xe) is an inert gas, which is more than twice as heavy as air. Air is scarce and generally has no influence on human body.

55. Cesium (Cs)! ! Cesium 133 is not an essential element for human body, but cesium 134 and cesium 137 are radioactive, which is harmful to human health.

56. Ba! ! Barium is a toxic element, but barium meal uses barium sulfate which is insoluble in water and fat, and it is harmless to human body.

Lanthanide elements: Lanthanide elements include from element 57 "La" to element 7 1 Lutetium, plus element 39 "Yttrium" and element 2 1 Scandium, * * * 17. Lanthanide is not an essential element for human body, and its influence on human body is: except yttrium (Y)! ! And Scandium (sc)! ! Other elements, if ingested in the total amount of no more than 1 mg per day, can reduce blood sugar and resist cancer, but a large amount will destroy the nervous system.

57. Lanthanum (La)

58. Cerium (Ce)

59. Praseodymium (Pr)

60. neodymium (Nd)

6 1. promethium (Pm) artificial elements.

62. samarium (Sm)

63. Europium (Eu)

64. Gadolinium (Gd)

65. Terbium (Tb)

66. Dysprosium (dy)

67. Ho (Ho)

68. Erbium (Er)

69. thulium (Tm)

70. Ytterbium (Yb)

7 1. Lutetium (Lu) (so much for rare earth elements)

The elements below are all heavy metals, which the human body doesn't need.

72.hafnium (Hf)! ! Hafnium is not an essential element for human body. Metal hafnium is nontoxic, but all compounds of hafnium are toxic.

73. Tantalum (Ta)! ! Tantalum is not an essential element for human body. Although it is non-toxic, excessive inhalation will deposit in the body and cause illness.

74. tungsten (w)! ! Tungsten is not an essential element for human body, and too much tungsten is deposited on bones to get osteoma.

75. Re! Metal rhenium is non-toxic, but the compound is toxic, but the toxicity is not too great, too rare and generally inaccessible.

76.osmium (Os)! ! Platinum group elements, osmium are not essential elements for human body, and the crust content is very small, and the oxides are toxic.

77.iridium (Ir)! Platinum group elements and iridium are not essential elements for human body, and the crust content is very small, and a small amount is harmless to human body.

78. Platinum (Pt)! Platinum group elements and platinum are not essential elements for human body, and the crust content is very small, and a small amount is harmless to human body.

79. Gold (Au)! Gold is not an essential element for the human body. Lack of it is just as well, but more is harmful.

80.mercury (Hg)! ! ! Mercury is harmful to human body, and there is too much osteodynia (watery disease) in the body and it is difficult to discharge it.

8 1. thallium (Tl)! ! ! Thallium has strong neurotoxicity, a small amount makes people lose hair, nails have stripes, and more poisoning leads to death.

82.lead (Pb)! ! Lead is not an essential element for human body, and excessive intake of lead will make people suffer from many diseases.

83. Bismuth (bi)! ! Bismuth is not an essential element for human body. It is harmless to lack it, but more harmful. Bismuth poisoning is similar to lead poisoning.

84. Polonium (po)! ! ! ! It is the most toxic element, 250 million times stronger than potassium cyanide, and 1 g can kill 100 million people. The crust is the rarest.

85. At! ! It is not an essential element for human body. It is rare and inaccessible to human body, and astaxanthin 2 13 is highly radioactive.

86. Radon (Rn)! ! Radon is an inert gas, but it is radioactive, and the radioactivity of Dali stone comes from it. The influence of smoking on health is also due to the accumulation of too much radon in the lungs to form internal radiation and cause disease.

87. Wei (Fr)! Radioactive elements with a half-life of 2 1 min are rare in nature and almost inaccessible to human body.

88. Radium (Ra)! ! ! Radium has strong radioactivity, which is out of the reach of ordinary people. Neither does the human body.

Actinides: The following elements are not needed by human body, and are not accessible to ordinary people.

89. actinium (Ac)! ! Radioactive elements are not needed by the human body and are not accessible to ordinary people.

90. Thorium (Th)! ! Radioactive elements are not needed by the human body and are not accessible to ordinary people.

9 1. praseodymium (Pa)! ! Radioactive elements are not needed by the human body and are not accessible to ordinary people.

92. uranium (u)! ! ! The raw materials of atomic bomb and nuclear power generation are radioactive and harmful to human body.

Artificial elements: What is only available in a laboratory with a short half-life is not needed by the human body, and the average person can't touch it.

93. neptunium (Np) !

94. plutonium (Pu)! ! ! Can make atomic bombs, 1945.8.9 is plutonium bombs used in Nagasaki, Japan.

95. Am! !

96. Curium (Cm)! !

97. Thumb (Bk)! !

98. californium (Cf)! !

99. polonium (Es)! !

100. Am (Fm)! !

10 1. !

102. Huang (No)! !

103. technetium (Lr)! !