Iodine (I) plays an important role in the functioning of the thyroid and a deficiency of the element leads to thyroid hypo-activity. Thyroid activity is closely correlated with sexual fervour, essential in racing pigeons, particularly widowhood cocks. The thyroid plays an active but complex role, with vitamin B1, in the burning of fats for energy, an abundance of which is essential for producing form.
Taken from Fit To Win
by Wim Peters