Your lungs are complex, yet delicate organs that replenish the oxygen in your blood with every breath you take. Each lung is divided into lobes and connected in the middle of your chest by your ...

Red blood cells carry oxygen from the lungs to every other organ, and blood-forming stem cells must make about 200 billion new red blood cells each day to keep the oxygen flowing. For many years, ...

The term "smoker's lung" refers to lung damage caused by smoking cigarettes. Over time, the chemicals in cigarettes damage the airways and lungs, leading to lung and respiratory diseases. Damage to ...