Below Average to Poor Health: Medium to Poor Health: Lungs rated as medium or poor health will feature some or all of the following characteristics. Obstructed Lungs: This refers to a condition where the airways in the lungs are partially or completely blocked, making it difficult to breathe. Obstructive lung diseases, such as asthma and chronic obstructive pulmonary disease (COPD), fall into this category. Obstructed lungs can indicate a serious impairment of lung function and can be a sign of more advanced lung disease. Restricted Lungs: This refers to a condition where the lung tissue itself is unable to expand fully, making it difficult to take deep breaths. This can be caused by several factors, including scarring of the lung tissue (as in interstitial lung disease) or weakness of the respiratory muscles. Restricted lungs can lead to decreased lung function and shortness of breath. Constricted Lungs: This refers to a condition where the airways in the lungs are narrowed, making it difficult for air to pass through. This can be caused by several factors, including inflammation, muscle spasms, or excess mucus production. Constricted lungs can be a sign of asthma or other respiratory conditions.