Question

why does lung capacity decrease with age

Answer 1

Bones become thinner and change shape. This can change the shape of your ribcage. As a result, your ribcage cannot expand and contract as well during breathing.The muscle that supports your breathing, the diaphragm, becomes weakened. This weakness may prevent you from breathing enough air in or out.

These changes in your bones and muscles may lower the oxygen level in your body. Also, less carbon dioxide may be removed from your body. Symptoms such as tiredness and shortness of breath can result.

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