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The Keys to Longevity - and Bryan Johnson's Diagnosis

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Do you want to live forever?

Bryan Johnson - the gazillionaire tech entrepreneur who started the "don't die" movement - created headlines (and some schadenfreude giggles) when he announced he was diagnosed with autoimmune gastritis, which is incurable.

The don't die website says: "We are at war with death and its causes. We are building towards an infinite horizon. We are fighting for the…