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Pernicious Anemia: This is an autoimmune disorder where the body mistakenly attacks a protein in the stomach called "intrinsic factor." Without this protein, you simply cannot absorb B12 from food, making injections a lifelong necessity
However, supplements alone might not be enough to guarantee success in getting pregnant
Heres how specific conditions can impact the use of B12 shots: Heart Disease: While B12 is essential for overall health, excessive amounts of vitamin B12 in the body may sometimes cause an increase in certain heart disease risk markers, particularly for individuals with pre-existing cardiovascular conditions
The relationship between selenium levels and breast cancer: a systematic review and meta-analysis
