Vitamin B deficiency affects the autonomic nervous system (ANS) function. This makes you more susceptible to syncope.
How To Spot It
Fainting due to vitamin B12 is usually accompanied by urinary problems, excessive sweating, digestion problems, blurry vision, and sexual problems like vaginal dryness and trouble climaxing.
What To Do
Because fainting does not necessarily mean your vitamin B12 stores are low, you may want to check out with your healthcare provider to know the exact cause of your fainting.