Home tests can be a good starting point but should not replace clinical evaluation. Certain medications can affect vitamin B12 absorption and levels, leading to potential deficiencies. Those ...

Vision problems can also be a sign of Vitamin B12 deficiency. The vitamin is vital for maintaining healthy optic nerves.

Vitamin B12 deficiency may cause tiredness, weakness, pale or jaundiced skin, tingling in the hands and feet, and memory ...