About

I'm Bernardo Paranhos, a production engineer trained at UTFPR Medianeira. LongevityStack applies the same discipline I use on a factory floor — bottleneck analysis, process optimisation, failure-mode identification — to sleep, supplementation and cognition.

I am not a physician. Every page on this site says so, and every claim is traceable to a primary source: study type, sample size, population and funding are declared inline, not buried in a linked PDF.

Why an engineer, not a doctor

Most sleep and supplement content is written by people optimising for engagement, not for being right. An engineering background doesn't make me more correct than a clinician — it makes me allergic to unsourced claims and comfortable saying "we don't know yet" when the evidence doesn't support a clean answer.

How this site makes money

Affiliate commissions on hardware and supplements I've actually used, and a newsletter with no sponsored placements. See the affiliate disclosure for specifics. No banner ads — they would sit against everything this site is trying to be.