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Heavy smokers and drinkers can also have low levels of B12
A vitamin B12 deficiency affects energy levels and immune health and may cause neurological problems like numbness and tingling in your hands and feet
B12 Injections deliver vitamin B12 directly into muscle tissue
There is no digestive step and no intrinsic factor requirement, which is the entire point for anyone whose absorption is compromised
Vitamin B12 shots should only be administered by a doctor or other medical professional
Because IV infusions bypass both the digestive system and the muscle absorption step, they offer the most direct pathway for nutrient delivery available outside of emergency medical settings
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