This study is about understanding two types of lung diseases: **Idiopathic Pulmonary Fibrosis (IPF)** and **Interstitial Lung Disease (ILD)**. IPF is a lung disease that causes scar tissue in the lungs, making it hard to breathe. ILD is a group of diseases that cause inflammation and scarring of the lung tissue. The study wants to learn more about these diseases by collecting information from people who have them. This includes asking questions about their health and taking blood samples and chest images. The study is looking for people who are at least 21 years old, recently diagnosed with IPF, or have other types of ILD. They must agree to share their health information. The study will take place over 5 years for IPF patients and 3-5 years for other ILD patients.

• The study is spread over 8 years and includes three phases.
• Participants will have regular follow-ups and give blood samples and chest images.
• Health information will be used to help understand these diseases better for future research.