a native hydrous magnesium silicate, sometimes with a small amount of aluminum silicate; used as a dusting powder. The inhalation of talc is associated with a wide variety of respiratory disorders.
Factors contributing to poor sleep include vitamin and mineral deficiencies. Magnesium deficiency can cause insomnia; lack of potassium can lead to difficulty staying asleep; and vitamin D deficiency has been linked to excessive daytime sleepiness.
Overview. Vitamin D, a fat-soluble vitamin, helps the body absorb and metabolize calcium and phosphorus. It is also involved in neuromuscular function. Sunlight synthesizes vitamin D in the skin and is obtained through diet. Evidence indicates that a low vitamin D level in men poses adverse effects on overall health.itamin D, a fat-soluble vitamin, helps the body absorb and metabolize calcium and phosphorus. It is also involved in neuromuscular function. Sunlight synthesizes vitamin D in the skin and is obtained through diet.