What is the function of vitamin B12? Firstly, vitamin B12 supports the production of red blood cells in the bone marrow and helps prevent anemia and associated symptoms such as paleness, breathlessness, muscle weakness, lethargy and fatigue. Secondly, it ensures the proper development of nerve cells by supporting the synthesis of myelin, the protective, insulating coating surrounding the tail of nerve cells. Via its myelin synthesizing property and other functions, it delays cognitive decline and improves memory. Thirdly, vitamin B12 increases energy levels by helping cells metabolize fats and proteins and boosts endurance.
Vitamin B12 deficiency symptoms include: red, sore tongue, numbness and tingling in legs and feet, arms and hands and other forms of involuntary muscle contractions or spasms, muscle weakness, balance problems, nervousness, heart palpitations, extrasystoles, breathlessness, lethargy, apathy, depression, memory problems and poor concentration, nerve damage, confusion, constipation, low hemoglobin levels or low red blood cell count, anemia.