A pulmonologist is a medical doctor who specializes in diagnosing and treating diseases of the lungs and respiratory system. They help patients with conditions like asthma, chronic obstructive pulmonary disease (COPD), and pneumonia. By using various tests and imaging techniques, such as X-rays and lung function tests, pulmonologists can determine the best treatment options for their patients. In addition to treating illnesses, pulmonologists also focus on preventive care and educating patients about lung health. They may work closely with other healthcare professionals, such as respiratory therapists and allergists, to provide comprehensive care for individuals with breathing difficulties or other related issues.