As it worsens, emphysema turns the spherical air sacs — clustered like  bunches of grapes — into large, irregular pockets with gaping holes in  their inner walls. This reduces the surface area of the lungs and, in  turn, the amount of oxygen that reaches your bloodstream.

As it worsens, emphysema turns the spherical air sacs — clustered like bunches of grapes — into large, irregular pockets with gaping holes in their inner walls. This reduces the surface area of the lungs and, in turn, the amount of oxygen that reaches your bloodstream.

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