Deficiency Risks and Who Is Most Affected Certain groups are at higher risk of deficiency, including: Vegetarians and vegans Adults over 50 with reduced stomach acid Patients with gut disorders such as Crohns or celiac disease Those taking long-term acid-reducing medications Symptoms of deficiency can include fatigue, pale skin, memory loss, depression, numbness, or tingling sensations
B12 injections are commonly used to help people who have low vitamin B12 levels or difficulty absorbing enough vitamin B12 through normal methods
Educational use only
Vitamin B12 supports healthy nerve function, affecting brain communication
[3] Those taking high-dose oral supplements without medical supervision also face increased risk
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