Common reasons include: Pernicious anemia , an autoimmune condition affecting intrinsic factor production Gastrointestinal disorders, such as Crohns disease or celiac disease Prolonged use of certain medications, like proton pump inhibitors Knowing these causes helps spot at-risk people
I follow quite closely the suggested treatment level for B12 deficiency with neurological damage because I dont think the treatment level specified for B12 deficiency with only blood symptoms, which is apparently what you are following, is adequate for achieving my two goals regarding neurological damage
If you cant quit smoking, you can mitigate this by eating nutritious foods, taking nutritional supplements and receiving a regular vitamin B12 injection
What follows is extrapolated from published rat and mouse studies, where tissue repair endpoints were measured at specific time points
Rapid weight gain may also occur
Nahmgoong, H