India, Dec. 17 -- Tech entrepreneur and longevity enthusiast Bryan Johnson has said he is aiming to achieve "immortality" by 2039, claiming that after a year of intense anti-ageing interventions, his biological age has not advanced.

In a lengthy X post, Johnson shared a photo comparison of his appearance from 2019 to 2025 and wrote, "One year of time passes and I remain the same biological age". The 48-year-old, who has drawn global attention for his extreme anti-ageing regimen, called this period an "absolutely insane moment" in human history.

"For the first time in the history of life on earth, in just the past 24 months, the window has opened for a conscious being to realistically strive for this goal," he wrote.

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