Vanadium, Silicon, Tin, Chromium, Aluminum, Boron and Cadmium

Vanadium, Silicon, Tin, Chromium, Aluminum, Boron and Cadmium
Vanadium
Vanadium deficiencies for human are not known; however, deficiencies of this element in birds and animals result in growth retardation, deficient lipid metabolism, impairment of reproduction function, and bone growth retardation.

Silicon
Silicon is found in unpolished rice and grains and is quite prevalent in beer. Certain disease involving connective tissues are believed to result when it is not present in adequate quantities. The required amounts for humans are not known.

Tin
Tin occurring naturally in many tissues, has been found necessary for the growth of rats. It is believed essential to the structure of proteins and possibly other biological components. As it present in most foods, tin deficiencies should not occur except possibly in foods that undergo refinement processes.

Chromium
Chromium plays a physiological role thought to be related to glucose metabolism – perhaps by enhancing the effectiveness of insulin. While it is a normal body component, its content decreases with age.

Aluminum, boron and cadmium
Aluminum, boron and cadmium are also found in trace amounts in the human body, but neither their roles nor the effects of their deficient or excessive amounts are known. Although the affected areas of the brain of those afflicted with Alzheimer’s disease have been found to contain excessive amounts of aluminum, the effect of this abnormality in the disease or vice versa is not yet clear.
Vanadium, Silicon, Tin, Chromium, Aluminum, Boron and Cadmium