Feeling out of breath or lightheaded could indicate that your red blood cells aren’t efficiently carrying oxygen throughout your body due to B12 deficiency.
7. Mood Swings and Depression
Low levels of B12 are linked to mental health issues, including depression and mood instability. B12 helps regulate neurotransmitters like serotonin and dopamine, which are crucial for mood balance. Psychology Today explores the connection.
8. Glossitis and Mouth Ulcers
Inflamed, swollen, or red tongue (glossitis) can be a clear sign of B12 deficiency. Some people may also develop mouth ulcers, a burning sensation on the tongue, or difficulty swallowing.
9. Vision Problems
Blurred or distorted vision can occur when B12 deficiency damages the optic nerve, disrupting the signals between the eyes and brain. Read more from the American Academy of Ophthalmology.
Who is Most at Risk?
- Vegans & Vegetarians (B12 is mainly found in animal products)
- Older Adults (reduced stomach acid affects absorption)
- People with Digestive Disorders (like Crohn’s disease or celiac disease)
- Those Taking Acid-Reducing Medications (which interfere with B12 absorption)
How to Prevent and Treat B12 Deficiency
✔ Eat B12-rich foods: Include meat, fish, eggs, dairy, and fortified cereals in your diet. See the best food sources here.
✔ Consider supplements: A B12 supplement or injections may be necessary if you have absorption issues or follow a plant-based diet.
✔ Get tested: A simple blood test can confirm B12 levels and help guide proper treatment. Check recommended B12 levels from Mayo Clinic.
Final Thoughts: Don’t Ignore the Warning Signs
B12 deficiency can cause serious health issues if left untreated, but early detection and proper diet or supplementation can restore your energy, brain function, and overall well-being.
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