Allergic reactions to vitamin B12 are rare, but real. The reason may sound strange, but it's true - an allergy to cobalt.

Is your hair feeling dull, weak, or falling out a lot more than usual? Check your vitamin B12 levels. While you search for ...

Nail color, texture, and shape changes can indicate health issues. Brittle nails suggest nutrient deficiencies, while ...

If you regularly feel fatigued or weak, you may have an iron deficiency. Here are some common symptoms, causes and ways to ...