The lungs are one of five vital organs in the human body along with the brain, heart, kidneys, and liver. Every breath you take helps to produce and distribute nutrients in the bloodstream that provide you with energy, heal your wounds, and maintain every other organ throughout the body. And while most people understand the basics of maintaining healthy lungs i.e., getting enough exercise, eating healthy foods, and not smoking, many people aren’t aware of how specific lung diseases differ from one another and how they’re diagnosed by medical professionals.