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Does Surfactant Decrease with Age? Dissecting the Impact of Aging on Lung Function

Contrary to the straightforward idea of a decline, some studies in healthy, non-smoking animal models show that the *quantity* of pulmonary surfactant is unaffected by normal aging. The question of whether **surfactant decrease with age** is more nuanced, focusing less on the total amount and more on subtle but significant changes in its composition and function that can compromise respiratory health.