Episode Details

Subtitle: A Nasal Spray Longevity Screen, Why Less Protein May Age You Better, Cadaver Skin Injectables, Art's Effect on Biological Age, and Which Anti-Aging Interventions Actually Move the Needle 

Nasal Spray Ingredient Emerges As Unexpected Longevity Candidate In Massive Drug Screen 

Researchers mapped 2,358 longevity-associated genes across the body's broader protein and signaling networks, then screened 6,442 approved drugs to see which ones nudged those aging pathways in a healthier direction. Oxymetazoline, the active ingredient in nasal sprays like Afrin, was among 21 standout candidates, with a predicted pathway running through the ACKR3 receptor and connecting to major aging proteins including NF-kB, TP53, and AKT1. Host Dave Asprey explains why this computational screen is a promising research lead rather than a protocol, and why chronic use of a vasoconstricting nasal spray carries real risks regardless of what a network analysis suggests. 

Sources: 

https://www.inc.com/lucia-auerbach/scientists-screened-6442-drugs-for-longevity-common-nasal-spray-emerged-as-a-surprising-candidate/91381000 

https://www.sciencealert.com/medications-already-in-pharmacies-may-slow-aging-and-scientists-are-narrowing-them-down 

https://pmc.ncbi.nlm.nih.gov/articles/PMC12425021/ 

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New Review Of 350+ Studies Asks Whether Less Protein Means Longer Life 

A review spanning more than 350 studies found that protein restriction consistently extended lifespan and improved metabolic health across mice, rats, flies, and fish, with smaller human studies showing improvements in body fat and fasting glucose even when total calorie intake rose. Researchers point to FGF21, a liver hormone that rises under protein or amino acid scarcity and boosts energy expenditure and glucose regulation, as a key mechanism. Host Dave Asprey breaks down why blanket protein advice fails older adults preserving muscle and highly active people just as badly as it fails everyone else, and why matching intake to actual biology beats maximizing protein at every meal. 

Sources: 

https://www.medicalnewstoday.com/articles/why-reducing-protein-intake-could-promote-healthy-aging-new-research 

https://time.com/article/2026/08/03/eat-less-protein-age-better-live-longer/ 

https://www.sciencedaily.com/releases/2026/08/260801042811.htm 

https://www.cell.com/cell-reports-blue/fulltext/S2949-8821(26)00079-9 

https://pmc.ncbi.nlm.nih.gov/articles/PMC8991228/ 

https://www.eurekalert.org/news-releases/1137190 

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Processed Cadaver Skin Injectable Enters The Anti-Aging Market As