Studies have shown that a swollen and inflamed tongue that has long straight lesions on it could be an early sign of vitamin B12 deficiency.
In a study with the US National Library of Medicine National Institutes of Health, vitamin B12 deficiency and manifestations that happen in the mouth was analysed.
The study noted: “The association of manifestations in the mouth and vitamin B12 deficiency is already known.
“The signs are not specific to vitamin B12 deficiency; however, they may reveal the deficiency and this is often ignored and leads to delays in diagnosis.”
The study concluded there is a strong link between lacking in vitamin B12 deficiency and oral changes.