➡️15. Pervasive Fatigue
This isn’t just feeling a little tired after a long day. We’re talking about a deep, persistent exhaustion that doesn’t go away, even with a full eight hours of sleep. If you find yourself needing a nap just to get through the afternoon or feeling chronically lethargic, it could be a major red flag. Vitamin B12 is a key player in energy production. More specifically, your body needs it to make red blood cells, which are responsible for carrying oxygen to every single part of your body. When your B12 levels are too low, your red blood cell count can drop, leading to a condition called megaloblastic anemia. With fewer red blood cells to transport oxygen, your tissues and organs don’t get the fuel they need to function optimally, resulting in that profound sense of fatigue.
