vitamin B12 deficiency. This happens because your body needs B12 to produce healthy red blood cells that carry oxygen throughout the body. Without enough oxygen circulating, you may feel weak, drained, or unusually exhausted even after a full night’s sleep.
2. Tingling or Numbness in Hands and Feet
Vitamin B12 is vital for maintaining healthy nerves. When levels are too low, it can damage the protective coating around nerves. This may cause a “pins and needles” sensation or numbness in your hands, legs, or feet. Many people mistake this for
