If you could, would you pay to live forever? Some Silicon Valley billionaires aren't just making tech products – they've set their sights on immortality .

Social media is flooded with influencers promoting peptides , "functional" mushroom powders and other (often non-evidence-based) hacks said to maximise your lifespan. Some even claim to reverse your " biological age ".

The quest to live longer, look younger or just live one's "best life" has become a booming industry , encompassing treatments as diverse as ice baths , saunas , cryotherapy chambers and even red light therapy .

But behind much of the marketing and social media posts are commercial interests willing to cater to a population fearful of ageing and dying.

Nobody lives forever

The key reason humans aren

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