VITAMIN B12 deficiency produces a number of eerie effects on the body and the type of symptoms you may experience depend on the underlying cause. One common warning sign associated with B12 deficiency caused by pernicious anaemia is a particular sound. Vitamin B12's impact on the body is brought into sharp relief if you become deficient in the vitamin. Vitamin B12 is a nutrient that helps keep the body’s nerve and blood cells healthy and helps make DNA, the genetic material in all cells. If the body does not get enough of the vitamin, it therefore responds in disturbing ways....