25K views · 171 reactions | Your lung is made up of millions of tiny air sacs called “alveoli.” The wall of each air sac is 10x thinner than a strand of hair, allowing oxygen to move throughout the body. With pulmonary fibrosis, thickened scar tissue and inflammation builds in the walls of these air sacs. This causes shortness of breath and can trigger cough. | Pulmonary Fibrosis Foundation | Facebook

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