How can a deficiency of B vitamins affect my body?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
A deficiency of B vitamins is known to cause: anemia, tiredness, loss of appetite, abdominal pain, depression, numbness and tingling in the arms and legs, muscle cramps, respiratory infections, hair loss, eczema, poor growth in children, and birth defects.
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