In the UK, thousands of people live with Vitamin B12 deficiency—many without even realising it. Left untreated, low levels of B12 can cause lasting damage, so raising awareness is crucial.
Why Vitamin B12 Matters
Vitamin B12 is essential for:
The nervous system – helping keep our brain and nerves healthy.
Red blood cell production – preventing anaemia and fatigue.
DNA synthesis – supporting cell growth and repair.
Mental health – with deficiency sometimes linked to low mood, memory issues, and confusion.
Without enough B12, daily life can quickly become a struggle, and in severe cases, irreversible nerve damage can occur.
Who’s at Risk in the UK?
According to the NHS, certain groups are more likely to be deficient:
Vegans and vegetarians – as B12 is mainly found in animal products. Many plant-based eaters rely on fortified foods (like breakfast cereals or plant milks) or supplements.
Older adults – absorption of B12 naturally decreases with age.
People with conditions such as pernicious anaemia, Crohn’s disease, or coeliac disease.
Those taking medications such as metformin (for type 2 diabetes) or proton pump inhibitors (used for indigestion and acid reflux).
Recognising the Symptoms
B12 deficiency symptoms can be wide-ranging and easy to miss. Watch for:
Extreme tiredness
Pins and needles (paraesthesia)
Mouth ulcers or a swollen tongue
Memory problems or confusion
Mood changes such as depression or irritability
Vision problems
If left untreated, these symptoms can worsen and cause permanent damage.
Getting Tested and Treated in the UK
If you think you might be deficient, book an appointment with your GP. They can arrange a blood test to check your B12 levels.
Treatment usually involves:
B12 tablets or sprays for mild deficiency or those at risk.
Hydroxocobalamin injections (available on the NHS) for people who cannot absorb B12 properly, such as those with pernicious anaemia.
With the right treatment, symptoms often improve quickly—but ongoing monitoring may be needed.
How to Support B12 Awareness Day
Share information with friends and family—many people don’t know how common B12 deficiency is.
If you follow a plant-based diet, make sure you’re getting enough B12 through fortified foods or supplements.
Support charities and groups that campaign for better recognition and treatment of B12 deficiency in the UK.
On B12 Awareness Day, let’s take the opportunity to talk openly about this hidden health issue, encourage others to seek help if they’re struggling with symptoms, and ensure B12 deficiency gets the recognition it deserves.
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