What is the cause of the chest X-ray report showing increased and thickened texture in both lungs?

Increased lung texture can be caused by both disease and non-disease factors.
Non-disease causes of increased lung texture include failure to inhale during radiographs, radiographs taken while the patient is in a recumbent position, reduced radiographic conditions due to aging of the X-ray bulb, heavy clothing, and obesity.
Increased lung texture due to disease is often caused by inflammation of the bronchial tubes, cardiovascular disease, and dust work. It is recommended to go to the hospital for a detailed examination to clarify the cause.