| UPDATED: 16:04, Sat, Mar 6, 2021
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Vitamin B12 is one of the most important vitamins for the body s overall health. But huge numbers of people may be at risk of a B12 deficiency, it s been claimed. What are the key warning signs of the condition?
Vitamin B12 is used by the body to make new red blood cells, nerves, and DNA.
It s also used in a number of other everyday bodily functions, but huge numbers of people may not be getting enough in their diet.
The body doesn t naturally engineer vitamin B12 - like it does for vitamin D - which is why it s crucial that everybody eats enough B12-rich foods.
But if you are at risk of a deficiency, it can be difficult to even know.
Vitamin B12 deficiency symptoms: Seven sneaky signs that may be overlooked (Image: GETTY Images)
There are a number of different tell-tale signs of a vitamin B12 deficiency, but they can be very sneaky , according to Harvard Medical School.
| UPDATED: 14:49, Wed, Jan 20, 2021
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Vitamin B12 helps the body to produce red blood cells and DNA
Common symptoms of a deficiency include pins and needles and blurred vision
Swollen tongues may also be caused by a deficiency