Paresthesia in hands and feet

A prolonged vitamin B12 deficiency can cause nerve damage, resulting in a pins-and-needles feeling in your hands or feet. Dr. Sarah Baker, an internist of CHI Memorial Chattanooga Internal Medicine Group, explains, "Vitamin B12 is essential to help neurons function. When B12 levels are too low, neurons are unable to function properly, resulting in symptoms such as numbness and tingling in the hands and feet".

This numbness or tingling is known as paresthesia, and if left untreated, it can become permanent. Many adults and kids who have B12 deficiency report experiencing paresthesia. Insufficient levels of the vitamin can cause nerve damage, which can affect your balance and ability to walk. If not addressed, this can become permanent, so let your doctor know if you have any issues.