Vocal folds. The vocal folds, also known commonly as vocal cords or voice reeds, are composed of twin infoldings of mucous membrane stretched horizontally, from back to front, across the larynx. They vibrate, modulating the flow of air being expelled from the lungs during phonation.
Some recent clinical studies show that vitamin D deficiency is closely related to thyroid problems. This article identifies the thyroid problems linked with vitamin D deficiency and discusses how vitamin D supplementation can help treat thyroid disorders.
Hypothyroidism can make you feel tired and vitamin D deficiency may be part of the problem.hey concluded that vitamin D deficiency may be involved in hypothyroidism and that the results warranted a recommendation for vitamin D supplementation. The study was published in the May 2011 issue of the journal Cellular and Modular Immunology..