How a tree dies of old age ?

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How a tree dies of old age ?

In: Biology
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disease, drought, fire

in the Western US there have been invasive bark boring beetles that are doing a lot of damage

Unlike humans, trees keep growing for their whole life. This isn’t necessarily a good thing. A tree can get so heavy that it breaks under its own weight. The bigger it gets, the more nutrients it needs, but the nutrients available may only be enough to sustain a smaller tree. The longer a tree lives, the more likely it is that it will catch some disease or suffer some natural disaster that injures or kills it (for the same reason that someone who buys more lottery tickets is more likely to win the lottery).

I dont think they die of old age. Sometimes they dont even die from being cut or burned, and instead use their stored energy to put up new shoots which are technically still the same tree