11. Heart palpitations
People with B12 deficiency may experience palpitations or rapid heartbeat. This is associated with anemia caused by low B12 levels, which impairs the blood’s ability to carry oxygen.
Who is at risk for B12 deficiency?
Older adults: B12 absorption decreases with age.
Vegans and vegetarians: B12 is found primarily in animal products, so those who avoid meat, dairy, and eggs may be at risk.
People with digestive problems: Conditions such as celiac disease, Crohn’s disease, and those who have undergone weight-loss surgery can impair B12 absorption.
People taking certain medications: Some medications, such as proton pump inhibitors, can impair B12 absorption.
If you experience any of these signs or suspect you may have a deficiency, it is important to see a doctor. A simple blood test can determine if your B12 levels are low, and your doctor may recommend supplements or dietary changes to correct the deficiency.

Have you experienced any of these symptoms or do you know someone who may be at risk for a B12 deficiency?