Mahimman haɓakar buƙatun bitamin B12 shine saboda karuwar adadin mutanen da ke bin cin ganyayyaki ko cin ganyayyaki. Tun da tsire-tsire ba sa samar da bitamin B12 a zahiri, masu cin ganyayyaki da masu cin ganyayyaki sun fi samun ƙarancin bitamin B12, wanda zai iya haifar da anemia, gajiya, ...
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