The first sign of vitamin B12 deficiency is…
The most common initial sign of vitamin B12 deficiency is often fatigue or extreme tiredness (Source 1.2, 1.3, 1.6, 1.8, 2.2). This is due to the role of Vitamin B12 in the production of healthy red blood cells, and a deficiency can lead to a condition called megaloblastic anemia, which impairs oxygen delivery throughout the … Read more