Alyuvarlar, or red blood cells, are essential components of the blood responsible for transporting oxygen from the lungs to the body's tissues. They contain a protein called hemoglobin, which binds to oxygen and gives blood its red color. Alyuvarlar are produced in the bone marrow and have a lifespan of about 120 days before they are recycled by the body. These cells play a crucial role in maintaining overall health by ensuring that organs and tissues receive the oxygen they need to function properly. A deficiency in alyuvarlar can lead to conditions such as anemia, which can cause fatigue and weakness due to insufficient oxygen delivery.