About Paul von Zielbauer

Paul von Zielbauer

Paul von Zielbauer

Paul von Zielbauer is the creator of AGING with STRENGTH on Substack.

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Clock Wars: Making Sense of the Biological Age Testing Boom Sep 04, 2025

Maybe you've seen the ads — "Discover your true age!" — or 50-year-old Silicon Valley gramp-bros bragging that they're "biologically 35." Or you've been exposed to "longevity influencers" and their more toxic (and almost entirely m... Read More

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59 and Counting Aug 28, 2025

Today I woke up 59. Not Paul, 58, anymore. I'm now Paul 5.9, if we're being Silicon Valley about it. The thing about turning 59 is that nobody talks about it. There's no cultural touchstone here, no milestone moment. Fifty felt significant. Sixty wil... Read More

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Never Mind Happiness. Age With Gratitude. Aug 21, 2025

It sure feels as if we now live in a post-happiness world. And we all know whom to blame — the guy who has lived rent free in our heads for so long, who dragged us into this low point in human history: Dan Gilbert, the Harvard psychologist who ... Read More

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Drinking Is the New Smoking. Unless You're Over 55. Aug 15, 2025

The latest Gallup poll shows that only 54% of Americans now say they drink — the lowest rate in the poll's 90-year history. The poll found declines in drinking since 2023 across all income and age groups, but what stood out to me is that Americ... Read More