Injecting Vitamin B12 is a Successful Way to Treat Pernicious

Question

Injecting vitamin B12 is a successful way to treat pernicious anemia.

Accepted Answer

Injecting vitamin B12 bypasses the digestive system and provides the vitamin directly to the bloodstream, making it an effective treatment for pernicious anemia, which is caused by a lack of intrinsic factor in the stomach that inhibits the absorption of vitamin B12 from food.