However , loss of pulmonary function is commonly ascribed to old age , heart disease or to more common lung diseases .
Typically , patients are in their forties and fifties when diagnosed while the incidence of idiopathic pulmonary fibrosis increases dramatically after the age of fifty .
Loss of pulmonary function is commonly ascribed to old age , heart disease or to more common lung diseases .
Typically , patients are in their forties and fifties when diagnosed while the incidence of idiopathic pulmonary fibrosis increases dramatically after the age of fifty .