Whether death and other defects are natural to man?

Objections

Objection 1 : It would seem that death and such like defects are natural to man. For "the corruptible and the incorruptible differ generically" (Metaph. x, text. 26). But man is of the same genus as other animals which are naturally corruptible. Therefore man is naturally corruptible.
Objection 2 : Further, whatever is composed of contraries is naturally corruptible, as having within itself the cause of corruption. But such is the human body. Therefore it is naturally corruptible.
Objection 3 : Further, a hot thing naturally consumes moisture. Now human life is preserved by hot and moist elements. Since therefore the vital functions are fulfilled by the action of natural heat, as stated in De Anima ii, text. 50, it seems that death and such like defects are natural to man.