Headaches

Anemia is a condition in which the amount of red blood cells in your bloodstream is unusually low. Red blood cells transport oxygen from your lungs to the rest of your body. Your organs may receive less oxygen if you have anemia. You may suffer headaches if your brain receives less oxygen than normal.

Headaches can be caused by a variety of things, but frequent, recurrent headaches might be a sign of iron deficiency. Basic headaches, which is the type of headache most people get from time to time, can result from iron deficiency anemia (IDA), which causes the brain to get less oxygen than it requires to function properly. IDA has also been linked to migraine, particularly in menstruating women.