###Human: Can low hemoglobin cause shortness of breath? ###Assistant: Hi. The hemoglobin levels and other abnormalities do not explain the severity of the symptoms that you are experiencing. Iron, Vitamin B12 and folic acid supplements along with dietary improvement to improve hemoglobin to 12 to 13 g% is necessary. However, after improvement, if the symptoms improve, then it could be a possibility. Hope your thyroid tests are normal and these are not anxiety or panic attacks. Try some breathing exercises like pranayama and meditation for relaxation. Inhaler maybe useful if there is an allergic reaction or bronchospasm. In case of serious shortness of breath and even if it mildly helpful, better to use during the episodes. For further information consult a hematologist online -->