Glossitis And Thrush:
One study found that the tongue swollen and swollen with long wounds was an early sign of vitamin B12 deficiency. This condition is called glossitis. If you have glossitis, your tongue changes color and shape so that it feels painful, red, and swollen. This condition can even make it difficult to eat and talk.
Red Blood Cells Reduction:
If there are not enough vitamin B12 in the body, red blood cells are not formed. As a result, the movement of oxygen in the body is not normal. This can often lead to breathing problems.