What are the symptoms of iron deficiency (anemia)?

Fatigue

Tiredness

Shortness of breath

Lightheadedness while standing

White in inner rim of the eyes

Paleness

Ridges on the nails

Palpations

Diffuse hair loss or thining (all around the scalp but not in an noticable pattern or area)

There are other signs and symptoms here to look at: 

Frequent infections

Headaches

Cracks in the corner of the mouth

Ringing in ears

Sore or red mouth