After a few days taking 1.5mg Boron - which helps enormously with cognition - I started having parathyroid pain. It disappeared after I lowered the Boron dosage to 500mcg. It hurts on both sides of my lower neck (exaclty where the parathyroid glands are

).
Looking forward to reading about
@L'engle experience as well!
Just checked my supplement bottles - I have between 1.3 and 2.3 mg boron a day, plus whatever I get from food. I don't get any neck pain. Just shows how different we all are!
EDIT for clarity - I don't get any pain in the
front of my neck/throat area (except occasional, usually brief sore throat which I am fairly sure is due to secretions from ears and nose dripping into throat). I sometimes get mild neckache at the
back, usually accompanied by mild headache.
At the front I just get swelling, presumably of lymph nodes/glands.