Stupidity can be induced; poisons, drugs and food that reduce thyroid hormone, by blocking iodine absorption for example, make you stupid. Don't be stupid,
cretinism stupidity 190 520 680 9080 (1128-3 2175 3350 5475 7252-8 9250) Hz
Cretinism is now known as congenital hypothyroidism. In adults,
Hypothyroidism 70 460 830 7500 (2000 8523 3136-3 4057-9 4297 5390) Hz
Fat tongue, thinning hair, weight gain, fatigue, joint and muscle pain are symptoms. Sounds like old age.
Good day.