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.
Vitamin D. Vitamin D is a substance that is created naturally in the body. Sunlight exposure stimulates and increases production of vitamin D in the body naturally. This vitamin works in the digestive tract to absorb calcium into the blood stream from the walls of the duodenum, or first part of the small intestine.Vitamin D also helps maintain normal blood calcium level, which is essential to life and to cardiac function.itamin D. Vitamin D is a substance that is created naturally in the body. Sunlight exposure stimulates and increases production of vitamin D in the body naturally. This vitamin works in the digestive tract to absorb calcium into the blood stream from the walls of the duodenum, or first part of the small intestine.