Which of the following is a symptom of anemia?

Fatigue and insomnia are classic symptoms of anemia, which is a condition characterized by a deficiency of red blood cells or hemoglobin in the blood. Anemia can reduce the amount of oxygen that reaches tissues and organs, resulting in a general feeling of tiredness or weakness. Additionally, chronic fatigue can often lead to difficulties in sleeping or maintaining sleep, contributing to insomnia.

This physiological response to the lack of oxygen can manifest in various ways, and since the body is not receiving adequate energy and resources to function optimally, it's common for individuals with anemia to experience significant levels of fatigue and related sleep disturbances. Understanding these symptoms is crucial for recognizing the need for further evaluation and treatment options for those affected by anemia.