You should check calcium, vitamine D. and parathyroid hormone levels and consult a physician. Brain fog is typical for elevated levels of calcium. I had a thyro

You should check calcium, vitamine D. and parathyroid hormone levels and consult a physician. Brain fog is typical for elevated levels of calcium. I had a thyroid cancer which affected parathyroid glands (rare) and had a brain fog for like a couple of years before being properly diagnosed. It is nasty because it affects your emotional and intellectual abilities but it is difficult to self-observe.