You sleep all night, wake up exhausted, push through the day in a fog, and assume it’s just stress or a busy schedule catching up with you, but,
Sometimes the cause isn’t lack of sleep at all. Low levels of vitamin B12 can quietly affect how your body produces red blood cells and delivers oxygen, leaving you feeling constantly tired even when you’ve rested.
The signs can appear in small ways — tingling in the hands and feet, pale or slightly yellowish skin, brain fog, or trouble concentrating. Some people also notice light-headedness, shortness of breath, or an unusually sore tongue. But the subtle symptom many people ignore at first can be the clearest signal that the body may be running low on this essential nutrient, therefore,