Answer by
Kit (558)
One of the functions of the thyroid gland is to eliminate guanidine - a toxic substance. This chemical is created a result of metabolism. If thyroid is underactive, guanidine that is widely found especially in some cooked foodstuffs, beef and/or meat, will increase. When guanidine becomes much, it produces alkalosis, that deposits calcium in the joints, causing plan and arthritis.