Most people who eat non-vegetarian food meet their B12 needs
If you let it go for too long, it can cause problems in your nervous system such as: Vision problems Memory loss A pricking or numbing sensation Difficulty speaking or walking due to ataxia (loss of physical coordination) Damage to your extremities (hands, feet, arms, etc.), particularly your legs Other problems could include Infertility (this should go away with B12 treatment) Stomach cancer Bleeding and infections Damage your heart, brain, bones, and other organs in your body If you're pregnant and don't get enough vitamin B12, your baby is at risk of a serious birth defect called a neural tube defect
Where is the best place to inject B12
Vitamin B12 (Cobalamin) StatPearls
Most people want to live as long as possible, without the negative effects of aging
Unknown Important limits No established long-term human safety data exists