US tech entrepreneur and anti-ageing influencer Bryan Johnson — best known for spending millions annually to reverse his biological age — has now experimented with magic mushrooms as part of his longevity research.

Johnson, who runs the anti-ageing startup Blueprint , revealed on social media that he took a five-gram dose of the psychedelic substance in an effort to study its potential effects on longevity and brain function. Sharing his experience on X (formerly Twitter), the 46-year-old wrote, “Yes, this trip changed me. Probably not as you’d expect. People assume I am fearful of death. I’m not. In my darkest days of depression, I reconciled with death.” He added that he needed a few days to collect his thoughts before sharing more about the experience.

The entrepreneur described f

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