Vitamin B12 is an essential vitamin that our body needs for the central nervous system. Deficiency of this vitamin affects the body in several ways that are unknown to people. In a recent post made on X, formerly Twitter, Dr. Sudhir Kumar, who goes by the name "hyderabaddoctor", shared a case of a 12-year-old school student who had vitamin B12 deficiency.
"He was unable to remember the next morning what he studied the previous night"
