Food-first longevity.
Science-led.

Food before supplements

Where a whole food contains a longevity compound — or a precursor the body converts into one — that food is the primary entry. Supplements are downstream. We map upstream.

Stress produces potency

Plants under environmental stress — drought, UV, poor soil — produce higher concentrations of protective polyphenols. Growing method matters as much as species. We track both.

Precursor chains, not just direct sources

Some of the most effective compounds never appear directly in food. They are produced when the body converts something else. We map those conversion chains explicitly.

Evidence-tiered, not opinion-based

Every compound and food relationship carries a confidence tier: peer-reviewed study, credible researcher consensus, or community-reported. You can filter by what matters to you.

Living, not static

Longevity science changes. Researcher positions evolve. New studies revise old assumptions. Virisource is updated continuously — not published once and left to go stale.

When a plant is stressed — by drought, UV radiation, poor soil, or predators — it produces polyphenols and other protective compounds to survive. These molecules are the plant's stress response made chemical.

When we consume them, our cells detect these molecules as mild stressors and activate the same ancient survival pathways — sirtuins switch on, cellular cleanup begins, inflammation decreases.

This is xenohormesis — and it explains why a dry-farmed blueberry grown under stress contains significantly more pterostilbene than one grown in ideal conditions. The stress is the point.

Xenohormesis is one of several mechanisms Virisource tracks. It's not the whole story — but it's why growing method appears on every food entry in the directory.

An AI-assisted scan of PubMed, bioRxiv, and Google Scholar surfaces new papers matching longevity compound terms. Sinclair's lab page, podcast, and public statements are tracked directly. When a researcher revises a position — or new evidence contradicts an existing entry — the directory is updated.

An AI crawler searches USDA farmer registries, Local Harvest, CSA directories, and targeted web searches for farms using stress-inducing or high-compound growing methods. All candidates land in the review queue — nothing goes live without human approval.

Concentration data from FooDB, Phenol-Explorer, and USDA FoodData Central is diffed against the database. Significant changes are flagged and evidence tiers are updated. New compounds identified in research are added to the taxonomy.