Feeling Tired All the Time? Could It Be Vitamin B12 Deficiency?

Do you constantly feel exhausted, foggy, or run-down?

If you've been experiencing low energy, trouble focusing, or pins and needles in your hands or feet, you're not alone. Many adults in the UK report unexplained fatigue and neurological symptoms that can make daily life a challenge. Could a lack of vitamin B12 be the culprit?

What is vitamin B12 and why is it important?

Vitamin B12 is essential for making red blood cells, keeping your nervous system healthy, and supporting DNA production. A deficiency can develop slowly and may be mistaken for other common issues.

Common symptoms of B12 deficiency include:

• Persistent tiredness or weakness
• Memory or concentration problems
• Unusual mood changes
• Tingling or numbness
• Pale or yellow skin

Who is at risk in the UK?

B12 deficiency is more common in vegans, vegetarians, those over 50, and people with gut health issues like coeliac or Crohn’s. If you have a restricted diet or a family history of anaemia, regular checks are wise. Read more on B12 deficiency at NHS A-Z.

How can you check your B12 levels easily?

Mayfield Clinic makes it simple with our Active Vitamin B12 Home Blood Test Kit. Using a small finger-prick blood sample, you can test your levels from the comfort of home with fast, professional results in one day. No waiting for GP appointments or busy NHS labs.

What can you do if you're feeling these symptoms?

• Review your diet and look for B12-rich foods like meat, eggs, and fortified cereals.
• If you follow a plant-based diet, consider B12 supplements.
• Cut down on alcohol, which can reduce vitamin absorption.
• Stay informed: regular testing can help you catch and correct deficiencies early.

If symptoms persist, a simple test is the best way to know for sure. You can buy a home testing kit or book an in-person blood test at Mayfield Clinic.

Get clarity about your health

Don't let mystery symptoms take over your life. With Mayfield Clinic's home blood testing service, you get answers quickly, so you can take charge of your metabolic and nutritional health.