# Superhuman Contact Lenses, Motivation Supplement Stack, Cat Scratches Cause Brain Fog, Amino Acid Shortening Lifespan, and more... : 1448 Page: https://stenobird.com/podcast/the-human-upgrade-biohacking-for-longevity-performance-1031629/superhuman-contact-lenses-motivation-supplement-stack-cat-scratches-cause-brain-fog-amino-acid-shortening-lifespan-and-more-1448 Text version: https://stenobird.com/podcast/the-human-upgrade-biohacking-for-longevity-performance-1031629/superhuman-contact-lenses-motivation-supplement-stack-cat-scratches-cause-brain-fog-amino-acid-shortening-lifespan-and-more-1448.md Podcast: [The Human Upgrade: Biohacking for Longevity & Performance](https://stenobird.com/podcast/the-human-upgrade-biohacking-for-longevity-performance-1031629) Published: 2026-04-10T08:30:00+00:00 Episode link: https://dts.podtrac.com/redirect.mp3/mgln.ai/e/p394/rss.art19.com/episodes/9a5a6e72-cabf-49e2-a72b-a631826036e4.mp3?rss_browser=BAhJIg90cmFuc2NyaWJyBjoGRVQ%3D--952c5701c84ad333c69d5faa668f8177091704f0 Audio file: https://dts.podtrac.com/redirect.mp3/mgln.ai/e/p394/rss.art19.com/episodes/9a5a6e72-cabf-49e2-a72b-a631826036e4.mp3?rss_browser=BAhJIg90cmFuc2NyaWJyBjoGRVQ%3D--952c5701c84ad333c69d5faa668f8177091704f0 Processing state: not_requested JSON: https://stenobird.com/v1/public/podcasts/the-human-upgrade-biohacking-for-longevity-performance-1031629/episodes/superhuman-contact-lenses-motivation-supplement-stack-cat-scratches-cause-brain-fog-amino-acid-shortening-lifespan-and-more-1448 Duration seconds: 587 ## Resource This week's stories:  *Bartonella Hides in Cat Scratches — and It Might Be Why You Feel Like Garbage  A stealth bacterial infection transmitted by everyday cat scratches and flea dirt has been quietly linked to chronic fatigue, brain fog, and neurological symptoms for decades. Dave breaks down how Bartonella slips past standard testing, why it's almost never on a conventional doctor's radar, and the specific PCR protocol you need to actually find it.  Sources:  https://pubmed.ncbi.nlm.nih.gov/     *High Tyrosine Levels May Be Cutting Years Off Men's Lives  A Mendelian randomization study of 270,000 UK Biobank participants found that elevated tyrosine is causally linked to nearly a full year of lost lifespan in men — with zero effect in women. The culprit appears to be an inflammatory oxidation pathway that men metabolize very differently. Dave examines what this means for every guy stacking L-tyrosine nootropics or eating high-protein keto.  Sources:  https://pubmed.ncbi.nlm.nih.gov/41045493/   https://www.aging-us.com/news-room/high-tyrosine-levels-linked-to-shorter-lifespan-in-men   https://www.usnews.com/news/health-news/articles/2026-02-27/study-suggests-one-common-amino-acid-may-affect-how-long-men-live     *Blue Light Blocking Contact Lenses Are a Legitimate Vision Upgrade  ALTIUS Vision's tinted contact lenses aren't just blue light filters — they cut chromatic aberration by 53% and improve motion tracking and contrast sensitivity in ways that software filters simply can't replicate. Dave covers the mechanism, who benefits most (screen workers, TBI recovery, gamers), and how to find a provider.  Sources:&… ## Actions - request_transcript: `POST https://stenobird.com/v1/public/podcasts/the-human-upgrade-biohacking-for-longevity-performance-1031629/episodes/superhuman-contact-lenses-motivation-supplement-stack-cat-scratches-cause-brain-fog-amino-acid-shortening-lifespan-and-more-1448/transcription-requests` — Idempotently request low-priority transcript generation for this episode. - read_markdown: `GET https://stenobird.com/podcast/the-human-upgrade-biohacking-for-longevity-performance-1031629/superhuman-contact-lenses-motivation-supplement-stack-cat-scratches-cause-brain-fog-amino-acid-shortening-lifespan-and-more-1448.md` — Read the agent-friendly Markdown representation of this episode resource. A page view does not enqueue transcription. Agents should invoke `request_transcript` explicitly when they need this episode processed. ## Transcript Full transcripts are not published on public pages unless there is a clear rights basis.