How does lack of iron affect the body?

A lack of iron in the body can lead to iron deficiency anemia, which results in reduced production of hemoglobin, the protein in red blood cells that carries oxygen. Symptoms may include fatigue, weakness, pale skin, and shortness of breath, as the body struggles to deliver adequate oxygen to tissues and organs. Additionally, low iron levels can impair cognitive function and weaken the immune system, making the body more susceptible to infections. Long-term deficiency can also impact overall health and development, particularly in children and pregnant women.