i am a 32 year old female and my tongue has been going numb at night, i ve had a diabetes test done,my test result was 5.7, and a thyroid test which came out ok, but still in tongue feels numb when i wake up, i ve been taking multivitamins for over a week and vitamin b12 as well. the tongue numb seems to only happen at night. i dont snore either so i dont think sleep apnea is a problem