➤ A characteristic regulatory effect on the process of energy metabolism and maintenance of the body's hormonal balance.

➤ Active interaction with microelements, which leads to improvement of metabolism of proteins, fats, carbohydrates and vitamins (B12, C, E), normalization of reproductive activity, improvement of visceral organs microflora, activates synthesis of red blood cell proteins and prevents development of gout and anemia.

➤ Localized in such structures as liver, brain, bone tissue.

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➤ WC tungsten carbide 23%.

➤ W+Ni+Cu alloy - used in radiotherapy.

➤ W compounds are used in the manufacture of X-ray tubes as a subject for medical and industrial X-ray research.

➤ Tungsten threads have been used in acupuncture and gout therapy.

➤ It leads to loss of consciousness, tubular neurosis, uremia, chronic bronchitis, diffuse pneumosclerosis, and dermatological diseases.

➤ CNS disorders, such as asthenic-vegetative syndrome, toxic hepatitis, and vegetative dystonia, occur.

➤ There is no specific antidote is not available.

➤ The content of W in the earth's crust is 0.0055%; it is not found in water or the solar spectrum.

➤ In electric light bulbs, tungsten is heated to 2200 ^oC and exhibits high light output.

➤ Pure W melts at 3410 ^oC and boils at 6690 ^oC (as on the surface of the Sun).

➤ In compounds, W exhibits valence from 0 to 6 (except 1).

➤ Tungsten oxide WO₃ is capable of polymerization.

➤ W is a strategic material.

➤ From 1 kg of W, a wire 3.5 km long is produced. This is enough to produce 23 thousand 60-watt lamps.

➤ Na₂O·WO₂·WO₃ tungsten bronze is golden; Na₂O·WO₂·4WO₃ is blue; there are purple-red and purple bronzes, depending on the ratio of WO₂·WO₃.