Left untreated, it can lead to physical changes, such as a pale, yellow tinge to the skin and a sore, red tongue.
A vitamin B12 deficiency can affect the way you feel, causing pins and needles, irritability and depression.
It can even affect how you look, as disturbed vision may occur; a deficiency in this vitamin can also lead to a decline in mental abilities.
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Should you be low in vitamin B12, it can affect your memory, understanding and judgement.
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Source: Daily Express
