The B12 Society

Supporting Lives Affected by B12 Deficiency

UK charity raising awareness, supporting people affected by B12 deficiency, and improving diagnosis and treatment through training and research.

Check Your Symptoms Explore Patient Resources

85,000+

Community Members

120+

Symptoms Listed

UK Charity

Awareness, Support, Training, Research

A Small Charity With A Big Community

The B12 Society is small and depends heavily on donations.

We are a small charity, and donations help us keep providing patient support, education, advocacy, and awareness work for people affected by B12 deficiency.

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Understanding B12 Deficiency

Get the information you need to recognise symptoms and seek proper treatment for B12 deficiency and pernicious anaemia.

Join Our Community

Connect with thousands of others affected by B12 deficiency. Share experiences, find support, and get the help you need.

Signs & Symptoms

Explore 120+ listed symptoms and practical guidance to support safer conversations with your GP.

How We Can Help You

From recognising symptoms to finding treatment, we provide comprehensive support throughout your B12 deficiency journey.

Check Your Symptoms

Evidence-based assessment

Use our symptom assessment tool to understand your symptoms and get guidance on next steps with your GP.

Browse Symptom Library

120+ symptoms listed

Explore 120+ listed symptoms across body systems and use the library to prepare for GP discussions.

Understand Causes & Risks

Cause-focused guidance

Learn key causes and risk factors, including pernicious anaemia, absorption issues, and medication effects.

Avoid Common Misdiagnoses

Practical next steps

See conditions often confused with B12 deficiency and practical steps for safer diagnostic conversations.

Community Support In Action

Read recent featured feedback from our community and connect with the charity's Facebook groups for peer support and shared experience.

Recent Featured Feedback

The three most recent featured comments published by the charity.

Published featured comments will appear here once they have been reviewed and marked for display.

Join Our Facebook Groups

Two charity-linked peer-support groups for shared experience, awareness, and practical encouragement.

Vitamin B12 Wake Up

Volunteer-led community including recovered individuals and medical professionals focused on awareness, support, and training for this condition.

Open Facebook Group

Vitamin B12 Wake Up for Parents

Group for parents of children with suspected or confirmed low B12, and for older children and teens who want peer support.