Vitamin B12 Deficiency

Vitamin B12 deficiency occurs when the body lacks enough B12, an essential nutrient needed for red blood cell production, nerve function, and DNA synthesis. Without adequate B12, individuals may experience symptoms like fatigue, weakness, numbness or tingling in the hands and feet, difficulty walking, memory problems, and mood changes. It can result from poor dietary intake, absorption issues (such as in pernicious anemia or gut conditions), or certain medications. B12 deficiency is treatable through dietary changes, supplements, or injections, preventing serious complications if diagnosed and managed early.