Because vitamin B12 plays an important role in nerve function, a deficiency can affect coordination, balance, and muscle strength. This can lead to problems with walking or an unsteady gait.
5. Memory problems or cognitive decline
A vitamin B12 deficiency has been linked to memory problems, concentration problems, and in more severe cases, even cognitive decline or dementia. It can reduce mental clarity and lead to confusion or mood swings.
6. Mood swings or depression
A vitamin B12 deficiency can cause mood swings, irritability, or depression. Vitamin B12 is important for the production of serotonin, a neurotransmitter that regulates mood.
7. Shortness of breath or dizziness
People with a vitamin B12 deficiency may experience shortness of breath or dizziness, even during simple activities. This is because a lack of vitamin B12 can impair the production of red blood cells, leading to anemia and reduced oxygen levels.
8. Glossitis (swollen, inflamed tongue)
A vitamin B12 deficiency can cause the tongue to become painful, swollen, smooth, and inflamed. This is called glossitis and often leads to problems with swallowing or speaking.
9. Vision problems
In some cases, a vitamin B12 deficiency can affect the optic nerve, which can cause visual disturbances such as blurred vision or double vision due to nerve damage.
10. Digestive problems
A vitamin B12 deficiency can cause digestive problems such as nausea, diarrhea, constipation, or loss of appetite.
Signs of vitamin B12 deficiency are ignored.
