10 years younger, but…: Man who followed Bryan Johnson’s anti-aging plan spills the downsides

Bryan Johnson’s Blueprint, a strict regimen designed to slow and even reverse biological ageing.

In a post on X (formerly Twitter), Max shared that after nearly two years on the programme, his biological age had dropped from 28 to 18. According to him, 90% of his biomarkers are now within optimal ranges.

“Almost 2 years on @bryan_johnson's Blueprint: in 2023: always tired, carb-loading, night owl habits. In 2024: turned things around, focused on health & longevity. 2025: 10 YEARS YOUNGER biologically (18 vs 28) with 90% of all biomarkers in optimal ranges,” he wrote.

The claim quickly gained traction, drawing curiosity and scepticism in equal measure.

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The Cost of a Longevity Lifestyle

While many were fascinated by Max’s results, one X user asked, “Are there any downsides, though? I’d love to see the full picture.”

Max responded candidly, admitting that the programme had come with trade-offs.

“Downsides I’ve experienced: 1) Social flexibility takes a hit sometimes (especially around late dinners, going out…) 2) Time investment for tracking is real 3) I’ve learned to use the 80/20 rule – perfect adherence isn’t sustainable 4) I go through phases of higher/lower commitment depending on work demands,” he explained.

For those unfamiliar, the 80/20 rule refers to maintaining strict discipline 80% of the time while allowing for flexibility in the remaining 20%.

He also shared key lessons from his journey, stating, “The most important things are nutrition, sleep and exercise, which should be taken care of before thinking about supplements. Tracking progress is important because you can only improve what you measure. Lastly, having supportive friends helps you stay on track and stick to the plan.”

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