In severe cases, vitamin B12 deficiency can damage the optic nerve. This may lead to blurred or double vision, increased sensitivity to light, or even partial vision loss if left untreated.
6. Burning Sensation in the Feet
Nerve damage caused by low vitamin B12 levels may present as a burning or aching sensation, especially in the feet. Over time, this sensation can spread up the legs or into the arms.
7. Difficulty Walking or Poor Balance
Loss of coordination, unsteady walking, or frequent stumbling can be signs of neurological damage linked to prolonged vitamin B12 deficiency.
8. Memory Problems and Brain Fog
Trouble concentrating, memory lapses, confusion, and slowed thinking are additional neurological symptoms that may appear as vitamin B12 levels drop.
Who Should Get Tested?
You should talk to your doctor about testing your vitamin B12 levels if you:
Are over 50 years old
Follow a vegetarian or vegan diet
Have had weight-loss or gastrointestinal surgery
Take medications that reduce stomach acid
Use metformin for diabetes
Vitamin B12 deficiency often develops slowly, and symptoms may be subtle at first. Early detection is key, as nerve damage can become irreversible if untreated.
If something feels “off,” don’t ignore it—your body may be trying to warn you.
