Afflictions of the thyroid can compromise the function of the parathyroid. Parathyroid derangement is easily checked with blood calcium levels, but is overlooked in the etiology of Alzheimer's-like symptoms. P.S. You can't tell if you have Alzheimer's except post mortem. Faulty parathyroid function can lead to a rapid deposition of calcium in the brain, inducing dementia. If there is therapeutically induced or spontaneous healing of the parathyroid, dementia can be reversed. GOD BLESS!