Vitamin B12 is an essential nutrient that helps your body produce healthy red blood cells, maintain normal nerve function, and support DNA production. Despite its importance, a vitamin B12 deficiency can develop gradually, sometimes causing subtle symptoms that are easy to mistake for stress, aging, or ordinary tiredness.
The problem is that untreated vitamin B12 deficiency can cause nerve damage that may become irreversible. Recognizing the warning signs early and seeking appropriate testing can help prevent complications.
Here are nine symptoms worth understanding—and when you should seek medical advice.
- Persistent
