Vitamin B12 is naturally found in animal foods, including meats, fish, poultry, eggs and dairy. However, it can also be found in products fortified with B12, such as some varieties of bread and plant-based milk. Unfortunately, symptoms of a vitamin B12 deficiency can take years to show up and diagnosing it can be complex. Taking a good look at your face and noticing any changes, however, could hold some visual clues.
Angular cheilitis
Angular cheilitis is a condition that causes “red, swollen patches in the corners of your mouth”, explained WebMD.
DermNet NZ added that symptoms of angular cheilitis can include painful cracks, crusting, oozing, or bleeding.
Nutritional deficiencies, especially of iron and B vitamins, are important in the development of angular cheilitis.
Swollen tongue
You could be at risk of the condition if you notice a subtle change to the colour of your tongue, it’s been claimed.
People with a B12 deficiency might notice their tongue change colour and shape, according to dietitian Helen West.
It might become increasingly painful and swollen, and it could appear a brighter red than normal.
It’s caused by a symptom known as glossitis, which has been linked to a B12 deficiency.
The best dietary sources of vitamin B12 include animal products, and some fortified breakfast cereals.
All adults need around 1.5mcg of vitamin B12 every single day.
Most people that eat meat products should be able to get enough B12 in their diet.
But those that follow a vegan diet may be at risk of a deficiency, warned the NHS.