The symptoms of iron deficiency can vary from person to person, but the most common symptoms include:
Fatigue and weakness
Paleness in the skin and mucous membranes
Dizziness
Headaches
Shortness of breath during exercise
Heart palpitations or fast pulse
Increased risk of infections
Hair loss or brittle hair and nails
Decreased appetite
Abnormal cravings for non-food items, such as ice, clay, or starch (pica)
In severe cases, iron deficiency can lead to anemia, where the body doesn't have enough red blood cells to transport oxygen to the body's tissues. This can lead to further symptoms, such as dizziness, shortness of breath at rest, and rapid fatigue.