If it’s hard to explain CF to your family and friends why you look ok on the outside but not on the inside, watch and share this video to see how lungs normally work, and how CF can affect the lungs over time. Learn more about the basics of lung care: http://on.cff.org/2rZ5tK0 | Cystic Fibrosis Foundation

13K views · 64 reactions | Do you know the top five most common causes of pulmonary fibrosis? 贈 Interesting fact: In the United States, autoimmune and environmental PF are the most common when a cause is identified. | Pulmonary Fibrosis Foundation | Facebook