Sneaky signs of B12 deficiency in the human body
The human body needs vitamin B12 to make red blood cells, nerves, and DNA, and carry out other functions. The average adult should get 2.4 micrograms a day. Like most vitamins, B12 cannot be made by the body and needs to come from your diet. A few symptoms of this deficiency include breathlessness, pale skin, and a fast heart rate.