Signs and symptoms of anemia include fatigue, weakness, pale skin, shortness of breath, and dizziness. It occurs when the body lacks sufficient healthy red blood cells to carry oxygen to tissues, leading to reduced energy levels. Other symptoms may include cold hands and feet, headaches, and irregular heartbeat. Different types of anemia exist, with iron-deficiency being the most common. Diagnosis typically involves blood tests to assess hemoglobin levels and other indices. Treatment depends on the underlying cause, and addressing anemia is crucial for restoring overall energy and wellness.