Emphysemsa is caused due to long term cigarette smoking. Emphysema causes more work for the lungs to breathe in air and exhale. This is the reasin why the breathing load increased when a person is suffering from emphysema.

TAGS: 1. analysis how copd increases work of breathing
2. analysis how lung cancer increases work of breathing
3. analysis how asthma increases work of breathing
4. analysis how chronic bronchitis increases work of breathing
5. analysis how pneumonia increases work of breathing